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Best 3-Season Sleeping Bags for Backpacking

by | Apr 18, 2022 | Sleeping Bags, Pads & Sleeping Systems, TIPS & TRICKS | 2 comments

What is a 3-season sleeping bag? Three-season sleeping bags offer the ultimate in versatility. Unless you need a winter sleeping bag for really cold weather (or camping over 10,000ft), a 3-season sleeping bag will see you through the shoulder-season chills.

We’ve put together a buying guide as well as the best 3-season sleeping bags with reviews to help you make the right choice. These light sleeping bags also are ideal for bikepacking adventures, check out our 8 tips to planning a getaway.

Quick Look – Top Picks:

Below, you’ll find our detailed reviews and a buyer’s guide, but you can also click the links above to see current prices or read customer reviews on Amazon.

3-Season Sleeping Bag Reviews

Each of these come in at different price points depending on their features, and quality of materials and insulation. Here are the reviews of our favorite top-rated 3 season sleeping bags for adults.

Hyke & Byke Quandry 15 Degree

Hyke & Byke Quandary 15 F Hiking & Backpacking Sleeping Bag - 3 Season,...
  • Insulation: 650-fill Hydrophobic Down – water repellent treated
  • Shape: Mummy
  • Temperature comfort rating: 23°F to 50°F
  • Weight: Short: 2.56 lbs., Regular: 2.71 lbs. & Long: 2.89 lbs
  • Dimensions: Short: 6ft, Regular 6ft 6in, Long: 7ft 3in.
  • Stuffed sack size: 7.5 x 10in
  • Warranty: Lifetime

If you want a warm but lightweight 3 season bag then this is worth a look. Warm enough for fall and spring but light enough for summer use. Their innovative direct-to-consumer business model allows them to add more features to this camping sleeping bag without any compromise on quality or features.

The water-repellent treated down is kept in place with cleverly designed baffles. The result is a bag that will keep you comfortable in the low 30’s (if you’re using a sleeping pad) while only weighing-in at a lightweight 2.56-2.89 lbs.

Comfort-cut mummy shape allows for enough wiggle room even if you’re a restless sleeper.

The Hyke & Byke Quandry 15 packs down very small and comes with a compression stuff sack.

What We Like

  • High loft, 650-fill down for an excellent warmth-to-weight ratio
  • Down fibers with ClusterLoft base improves durability
  • Horizontal Baffle keeps insulation in place for consistent warmth
  • Insulated draft tube with anti-snag panel along zipper
  • Face gasket blocks drafts at hood opening

What We Don’t Like

  • Very little down fill on the bottom side of bag
  • Comfort limit is 40F to 70F

Best Sleeping Bag for Side Sleepers- NEMO Disco Sleeping Bag- Men’s and Women’s

Nemo Disco Insulated Down Sleeping Bag (15 & 30 Degree) - Men's & Women's
  • Insulation: 650-fill Down
  • Shape: Spoon
  • Temperature Comfort Rating: 25 degrees 
  • Weight: Regular: 2 lbs 11 oz., Long: 2 lbs 13 oz
  • Dimensions: Regular: 6ft, Long: 6ft 6in.
  • Stuffed sack size: 9 x 12in
  • Warranty: Lifetime

The baffled construction and Classic Spoon Shape make for a warm and comfortable bag once you get it zipped up. The down fill and outer shell is treated for water-resistance. The waterproof breathable footbox keeps your feet warm and dry. Their lines of sleeping bags for adults comes in two lengths and can be zipped together for couples who want to snuggle.

Great bag for a side sleeper, you can toss and turn freely in this bag. The design is generously cut to give you more room at the knees and elbows.

The NEMO Disco Sleeping was one of the comfiest we’ve used with their Blanket FoldTM soft blanket surround to better control the temperature and give you that at-home tucked in feeling. Even if there’s a cold breeze, there’s no way it’s getting past the no-draft collar.

At 2.7 pounds it’s light and it compresses down to around 8’x8?. You’d be hard pressed to find another bag at this price point that is as light, and performs down to the low 30’s.

Alternative image with link: Nemo Disco Womens 30 Reg (Celestial/Moonglade)

What We Like

  • 650-fill down is water repellent and makes for a very warm bag
  • Spoon shape design great for side sleepers
  • Lifetime warranty
  • Blanket fold gives extra material around the face for that the tucked in feeling
  • Zippers: Left (Men’s) and right (Women’s) sided can zip together for couples comfort
  • ThermoGills unzip to let out warm air if you get too hot

What We Don’t Like

  • Tight fit for men if you have broad shoulders

Sierra Designs Cloud 20 Zipperless Sleeping Bag

Sierra Designs Backcountry Bed 35, Lightweight Zipperless 35 Degree...
  • Insulation: 800-fill Down
  • Shape: Mummy
  • Temperature Comfort Rating: 20F / -4C
  • Weight: Regular: 1.9 lb Long: 2.2lb
  • Length Dimensions: Regular: 78″ Long: 84″ Women’s: 74″
  • Stuff Sack Size: 7.5 x 15 in
  • Warranty:

The design may be a bit unconventional but it works really well.

There are no zippers or velcro and you get into it through an opening on the top of the bag.

As you push outwards the walls of the bag push inwards to seal off against the integrated comforter, blocking any drafts.

The comforter gives you the versatility to sleep on your back, stomach or sides whilst keeping you snugly cocooned.

If you get too warm you simply take the comforter out or open the the flap at your toes to let some air in.

At 1lb 13oz it one of the lighter zipperless sleeping bags, so you might want to take this on a thru-hike, car camping or a short hike-in, because it will be a comfortable option.

What We Like

  • Integrated sleeping pad sleeve means no more slipping off the pad
  • Integrated comforter makes this a really warm bag
  • No zippers or velcro to have to open and close
  • Design is great if you tend to toss and turn at night
  • Comes with compression sack and stuff sack
  • 800-fill DriDownTM

What We Don’t Like

  • High Price Tag
  • Rather heavy and bulky for lightweight backpacking

Marmot Helium Down

  • Insulation: 800-fill Goose Down
  • Shape: Mummy
  • Temperature Comfort Rating: 25.2F
  • Weight: Regular: 2.1 lbs, Long: 2 lbs 4.5 oz.
  • Dimensions: Regular: 72 in, Long: 78 in
  • Stuff Sack Size: 7 x 14 in
  • Warranty: Lifetime

This sleeping bag Marmot Helium features its Ultralight Pertex Microlight resists abrasions and keeps the goose down from escaping. It has a curved baffle construction to prevent the down from shifting around, all of this means means it gives great warmth while remaining very light. At a shade over 2 lbs, this ultralight sleeping bag is a backpacker’s dream. keep you comfortable when the temperature gets down to 15 degrees.

This great warmth to weight ratio is thanks to the 800-fill goose down – treated with Down Defender for exceptional water resistance. Extremely comfortable, with plush inner material, the high quality insulation and nautilus hood make it perform well in cold conditions.

For summer use, a handy second fold-down zipper allows you to sleep comfortably with your arms outside the bag if you’re getting a little warm.

The 2-way full-length zipper also lets you vent your feet while keeping your top end zipped up. This bag works great as a 3 season bag and, with a warm sleeping bag liner, it’ll serve you well in winter conditions too.

What We Like

  • Fold-down extra zipper allows comfortable venting
  • Anatomical wrap-around footbox offers great warmth and comfort
  • 800-fill goose down results in great warmth to weight ratio
  • Full length 2-way zipper allows for venting along length of bag
  • Internal stash pocket ideal for phone of flashlight
  • Snagless draft tube

What We Don’t Like

  • Might be a bit too warm for milder temperatures
  • Only comes in a left-zip version. Sorry lefties.


The North Face Blue Kazoo

The North Face Blue Kazoo 15F / -9C Backpacking Sleeping Bag, High Rise...
  • Insulation: 650-fill Down – water repellent treated
  • Shape: Mummy
  • Comfort Temperature Rating: 25 F
  • Dimensions:
  • Weight: Short: 2 lbs. 1 oz., Regular: 2 lbs 2 oz., Long: 2 lbs. 5 oz., Extra Long: 2lbs x 7 oz
  • Stuff sack size: 9 x 17 in
  • Warranty: Lifetime

If you’re expecting some wet conditions but want the warmth / weight performance you get from down, then try this 3-season sleeping bag.

With their proprietary ProDown, North Face have combined lightweight warmth of down, with the kind of wet-condition performance you get from synthetics.

This down refuses to get wet and clump. This bag has an EN comfort rating of 25 degrees and a lower limit of 13 degrees.

Combined with its light weight (2.7 pounds), it’s a solid choice for shoulder-season performance. The shaped hood and full-length draft collar do a good job of adding to the already impressive comfort and warmth this bag offers.

It has well-placed synthetic-filled compression pads that increase warmth in areas where you would normally flatten out the down and lose heat.

What We Like

  • RDS certified 650-fill ProDown gives great warmth and outstanding water resistance
  • Great compressibility
  • Hood cinch cord positioned well so it doesn’t cut across your forehead
  • Glow in the dark zipper pull reduces nighttime fumbling
  • Pad loops to keep sleeping pad in place
  • Draft collar and tube to keep cold air out

What We Don’t Like

  • Shell fabric is a little noisy

Kelty Cosmic 20 Degree

Kelty Cosmic 20 Degree Sleeping Bag, Paradise Blue, Regular
  • Insulation: 550-fill Down
  • Shape: Mummy
  • Comfort Temperature Rating: 32 F
  • Dimensions: Short: 72 in. , Regular: 78 in. , Long: 84 in.
  • Weight: Short: 2 lbs. 7 oz., Regular: 2 lbs 10 oz., Long: 2 lbs. 15 oz.
  • Stuff sack size: Short: 7 x 14 in., Regular: 8 x 13 in., Long: 8 x 14 in
  • Warranty: Limited Lifetime

This bag offers 550-fill down insulation and great features at a budget-friendly price.

The hood is comfortable, and cinches down easily with cords on the top and bottom for those cold nights where you need to close up as much as possible.

It’s a traditional mummy shape, which tapers quickly down to a natural fit footbox. The full length two-way zipper (with draft tube and anti-snag panel) makes it easy to vent at the bottom of the bag if you get a bit warm.

Kelty Cosmic 20 Degree Down Sleeping Bag - Ultralight Backpacking Camping...

It comes with a stuff sack and packs to a compact 8’x14?.

Weighing 3 lbs it’s not exactly lightweight, but a down sleeping bag that’s good to 20 degrees, at this price makes it hard to beat.

What We Like

  • Updated version now has 600-fill hydrophobic down for even more warmth
  • Excellent water resistance and dries quickly
  • Thermal comfort hood and top draft collar keep cold air out and warm air in
  • Dual-slider zipper allows for easy venting along length of bag
  • Anti-snag draft tube

What We Don’t Like

  • Only comes in a right zip configuration


Big Agnes Torchlight Ultralight

Big Agnes Torchlight UL (850 DownTek) Sleeping Bag, 20 Degree, Long
  • Insulation: 600-fill-power DownTekTM
  • Temperature rating: 20 degrees (F)
  • Shape: Mummy
  • Weight: Regular: 2.69 lbs, Long: 3.0 lbs
  • Dimensions: Regular: 6ft, Long: 6ft 6in.
  • Stuffed sack size: 9 x 20in
  • Warranty: at Big Agnes discretion. Check their website

This is a good mid-range 3 season sleeping bag which performs well in mild weather. The Big Agnes expandable panels construction helps you sleep well in the wild and side venting feature is a life changing experience. It’s DownTek insulation absorbs 30% less water and dries 60% faster than untreated down, giving you more time to hike and less waiting around.

The jacket-style contoured food follows the shape of your head and drawstring that cinches the face gasket snugly to keep the warmth in. The Big Agnes Torchlight has a dual zippers on expandable panels to allow you to adjust the circumference of your backpack sleeping bag by up to 10 in. The comfort cut and roomy foot box are great if you’ve got big feet, or if the regular mummy bags make you feel restricted.

Alternative image with link: Big Agnes Torchlight UL (850 DownTek) Sleeping Bag, 20 Degree, Long

This Big Agnes Torchlight 20 sleeping bag has interior loops so you can add a sleeping bag liner and exterior loops to hang it dry. No need to toss it over a branch. It comes with an internal stash pocket for your valuables, you’ll always know where your phone is.

While it has features such as a full length draft tube prevents heat loss along the zipper – you don’t want to push it by using it in temperatures lower than the 20 degree comfort factor.

What We Like

  • Expandable panel that adds up to 10 in. of space
  • Full-length double slider zipper for ventilation
  • DWR coated shell exhibits excellent water repellency
  • Really lightweight
  • Long size can accommodate a tall and large person
  • Comes supplied with stuff sack and storage bag
  • Insulated tube along tailored hood and face gasket seal in warmth

What We Don’t Like

  • Zippers snag easily

Outdoor Vitals Atlas Hybrid 0-15- 30°F

Outdoor Vitals Atlas 0-15 - 30 Degree F 650+ Fill Power Starting Under 3...
  • Insulation: 80% LoftTek Hybrid insulation and 20% 800+ FP down
  • Shape: Mummy
  • Comfort Temperature Rating:
  • Weight: Regular: 2lb 9.5oz, LongWide: 2lbs 12oz
  • Dimensions: Regular: 6ft 3in, LongWide: 6ft 9in.
  • Stuffed sack size: 8 x 11in
  • Warranty: Limited Lifetime

Outdoor Vitals haven’t been around very long, but they’ve been producing good-quality down insulated sleeping bags at budget prices. It’s their novel direct-to-consumer business model, so it’s not down to any compromise on quality or features you need, savings that you can use towards your next camping adventure.

The bag is made of 20 Denier RipStop Nylon with VitalDryTM DWR is which allows it to dry quickly with its siliconized coating, causing the water to drain out of the insulation, keeping you cozy when your camping sleeping bag is damp.

It has horizontal should baffles keeps the heat in without struggling with cinching cords and drawstrings. The YKK Anti-snag center zip allows for easy access in and out, whether you are left or right handed.

Outdoor Vitals Atlas 30 comes in 2 sizes, Regular and LongWide. If you’re over 6 foot or tend to turn a lot while sleeping, then it’s going to feel a bit restrictive since there isn’t enough room to turn over.

The hybrid LoftTek synthetic loose-fill insulation with 20% DWR treated at 800+ 50-fill down power, will keep you warm even if your backpacking sleeping bag gets wet.

What We Like

  • Price is competitive for a down insulated sleeping bag
  • Left and right zip bags can be zipped together
  • Comes with a 4-point compression sack
  • 2-way zippers for venting
  • Cinch-able shoulder baffle and draft tube seal in warm air
  • Lifetime warranty
  • 1% of revenues donated to sustainable poverty projects around the world

What We Don’t Like

  • It’s a bit snug for bigger builds or active sleepers
  • Stuff sack tightening straps pulls apart when stuff sack is cinched

Kelty Tuck 20

Kelty Tuck 20 Degree Thermapro Ultra Sleeping Bag, Spinach/Castle Rock,...
  • Insulation: ThermaPro Ultra Synthetic
  • Shape: Mummy
  • Weight: Regular: 3lb 11oz. Long: 4.2lbs
  • Dimensions: Regular: 6 ft Long: 7ft 3in
  • Stuffed sack size: 8.7 x 15in
  • Warranty: Limited

If you want the reduced weight and size that a mummy shape provides while still having plenty of room to toss and turn then this is a great option.

The regular Kelty Tuck is a little snug for some but the long version is a lot more roomy. ThermaPro synthetic insulation keeps you warm, but it’s a bit bulky.

Kelty Tuck 20 Degree Thermapro Sleeping Bag

The Tuck zipper system and designed with your feet in mind, their natural fit footbox means if you need to wiggle toes or stretch your feet, unzip the bottom of the bag . The cushioned hood is comfortable, with a draft collar, draw cords and anti-snag draft tube along the zipper to seal in the heat.

If you want 20 degree performance from a big 3 season sleeping bag with a small price, try this Sleeping Bag Kelty.

Camping Sleeping Bag- Kelty Tuck 20

What We Like

  • Oversized design is ideal for active sleepers
  • High compressibility
  • Comfort-Tuck zipper allows great venting at feet
  • Internal media storage pocket for cell phone or small gadgets
  • Zipper draft tube

What We Don’t Like

  • No draft collar
  • Weighs in at 4.2lbs


TETON Sports LEEF Lightweight Mummy Sleeping Bag; Great for Hiking,...
  • Insulation:
  • Temperature rating: +20°F/-7°C 
  • Shape: Mummy
  • Weight: Adult: 3.5 lbs , Scout: 2.6 lbs
  • Dimensions: Adult: 7ft 3in., Scout: 6ft 3in
  • Stuffed sack size: 9in x14in

If you’re looking for a budget 3 season sleeping bag for mild temperature backpacking then this is a decent option to consider. This sleeping bag Amazon best seller shell is water and tear resistant.

You won’t want to be using it in really cold conditions but above 41F degrees it performs well considering the price. The 3-piece hood cinches around your head and it’s has zippers that run full length, keeping your entire body warm.

The inner lining is soft and feels great. The shell is DWR coated and handles light water but you don’t want to be caught in the rain with this. You won’t need to roll up this TETON Sport Leef sleeping bag, simply start at the bottom and stuff into the compression bag.

If you’re a beginner camper and you’re not sure yet if you want to commit to a more expensive bag, then this 3-season sleeping bag is a good deal.

What We Like

  • Impressive loft insulation
  • Internal stash pocket
  • Inner lining material has soft, plush feel to it
  • Surprisingly good construction considering the price

What We Don’t Like

  • Zippers that easily break
  • Compression straps sewn to bag instead of looping around the bottom.

Our Favorite of the Best 3-Season Sleeping Bag

The Marmot Helium it’s impressive how a bag this light, at 1-pound, can still be comfortable down to 15 degrees. They’re being a little modest in calling this a 3-season sleeping bag because it’ll perform well in most winter conditions too. A lightweight sleeping bag backpacker’s dream!

The curved baffle design keeps the 800-fill down in place, with a superior warmth to weight ratio, comfort and smart zipper layout, this is our favorite by some distance. The temperature-rating might be a bit extreme for backpacking in the height of summer, though.

Best for Budget

If you’re on a budget then it would be hard to find a better deal than the Outdoor Vitals 30 degree sleeping bag.

Outdoor Vitals Atlas 0-15 - 30 Degree F 650+ Fill Power Starting Under 3...

They haven’t cut any corners on the quality of materials, or the hydrophobic treatment of the down. This is a warm bag and their 30 degree comfort rating is pretty accurate.

If you’re a bigger guy, then you might need to give this bag a miss, because it only comes in one fairly snug size.

Sizing Guide

The best camping sleeping bag will should your shoulders and hips, with enough room for your toes to wiggle. How to choose the right length sleeping bag for backpacking trips, you should factor in your height and take measurements of your hips and shoulder girth. Sleeping bags for adults also come in shapes of mummy, spoon and traditional.

A backpacking sleeping bag length of 72″ long are best for individuals up to 5′-6″ tall.

Sleeping bags that are 78″ long are best for individuals 5?7? to 6’1″ tall.

Sleeping bags that are 87″ long are best for individuals 6’2″ to 6’6″ tall.

Taller than 6’6″? Let us know if you would like for us to review sleeping bags for tall people!

What is a 3-season sleeping bag?

As usual in the hiking community, not everyone can agree. In general, and for the purposes of this article, we’ll use the following sleeping bag temperature ratings:

  • Summer season: +30F and higher
  • 3-Season: +15F to +30F
  • Winter season: +15F and lower.

If you want to, check out our review of the best summer sleeping bags for lightweight, warm-weather backpacking. And our guide to winter sleeping bags, if that’s more what you’re looking for.

Features your 3 Season Sleeping Bag needs

Different sleeping bags will have different features but a really good one will check each of these boxes:

  • Cinchable Hood – You lose a lot of heat through your head, so make sure it’s got a hood that cinches down comfortably.
  • Draft Collar / Face Gasket – the hood will cover the top of your head but, depending on the design, will leave parts of your face and neck exposed. A draft collar or face gasket prevents cold air getting in past your chin.
  • Draft Tubes – A closed zipper will still let a cold draft in. A draft tube along the length of the zipper lies up against the inside of the zipper and blocks cold air.

How Warm is Warm Enough?

If you are heading out in the depths of winter – or camping over 10,000ft – and are worried about being warm enough, then you might like to consider a 4-season winter sleeping bag.

Some people find they get really warm at night regardless of the outside temperature. While others only manage to sleep comfortably if they’re wearing multiple layers and zipped up tight in a well-insulated bag. Men in general will sleep warmer than women.

For further tips & tricks on sleeping comfortably, you might like:

Preview Product Rating Price
KLYMIT STATIC V LUXE Sleeping Pad KLYMIT STATIC V LUXE Sleeping Pad 979 Reviews

A note on Temperature Ratings

When comparing, you’ll notice they are given a comfort rating and an extreme rating. The comfort temperature rating is defined as the minimum outside temperature at which the sleeping bag will still keep the average women, or cold sleeper, at a comfortable temperature.

The extreme rating is the minimum outside temperature at which a warm sleeper, or average guy, would still feel warm enough to sleep comfortably.

That’s not very helpful though, is it?

Warmth-to-Weight Ratio

When buying a bag that performs well in cooler weather, but is light and compact for a small backpack you need to consider the warmth to weight ratio. It’s easy to make a sleeping bag warmer by adding more insulation but this also adds weight.

Pound for pound, down insulation offers a better warmth to weight ratio than synthetic insulation. If you’re after the lightest, warmest bag then go for a duck- or goose-down option. If you’re looking to save some money then have a look at synthetics.

You’ll be able to find a synthetic insulated bag with comparable temperature ratings, but it’s going to be heavier than a down bag with the same rating.

Down vs Synthetic Insulation

If you can afford the higher price tag then the excellent warmth to weight ratio makes down your best option. Unlike synthetic insulation, down does not deal well with water so make sure that it is treated for water resistance.

If you want minimum space taken up in your pack then the superior compressibility of down also makes it your best bet. If you don’t mind your sleeping bag being a pound or so heavier and taking up a little more space then synthetic insulation will still keep you warm at a reduced price.


While you want your bag to be warm enough for the cooler shoulder seasons it also needs to be comfortable during summer. It’s a good idea to consider the venting options that the bag offers.

A bag with a 2-way zipper is always useful because it allows you to vent near the bottom of your legs while keeping your torso zipped up. If your feet tend to get warm then it’s a good idea to get one with a foot box that zips open so you can stick your feet out.


Having the best 3 season sleeping bag in your gear collection will mean that you’re covered for whatever nature can throw at you for the majority of the year. A temperature rating of +15F means you’ll be well prepared for shoulder-season chills.

Make sure the bag you choose matches the minimum temperatures you expect while also giving you options to cater for warmer summer nights.

Need More Advice on Gear and Footwear?

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Product Images credits: Amazon.com

Last update on 2022-02-27 / Affiliate links / Images from Amazon Product Advertising API

Home » TIPS & TRICKS » Best 3-Season Sleeping Bags for Backpacking


  1. WilliamJames67

    Absolutely loved my Kelty Cosmic down. It was super cozy and kept me warm. It’s also very light weight and packs down very small. Highly recommend this bag.

    • Clare

      I agree, you can’t really beat it for the price!


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