Updated on September 28, 2020

We all want two different sleeping bags on a bike tour. The bag we carry all day should weigh almost nothing and take up almost no space. The bag we sleep in at night should be lofty, spacious, comfy, and warm. The perfect combination of those qualities may be an impossible dream, but sleeping bag manufacturers get closer to it every year. This list of the best sleeping bags for bike touring should help you choose the right one for your next cycle tour.

Choosing a sleeping bag is a personal decision, and you’ll have to consider where you’ll be riding, the likely temperature and weather, and your body shape, sleeping style, budget, and other preferences before making a choice. What works best for one rider may not be right for another, even in similar conditions, but there’s a bag on the market to make almost anyone happy!

For more of our top bike touring gear recommendations, check out the Best Tents for Bike Touring.


Quick Answer - The Best Sleeping Bags for Bike Touring

  1. Marmot NanoWave 45
  2. Sea to Summit Spark SpII 28
  3. Therm-a-Rest Hyperion
  4. REI Co-op Trailbreak 20
  5. REI Co-op Magma 30


Comparison Table - Best Sleeping Bag for Bike Touring

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NameWeightTemp RatingInsulationShapePriceRatingReview
Marmot NanoWave 451.8 lbs56 FSyntheticMummy$794.2Read Review
Sea to Summit Spark SpII 281 lbs 02 oz38 FDownMummy$3794.5Read Review
Therm-a-Rest Hyperion1 lb. 6 oz.20 degrees (winter bag)900 fill-power downMummy$$$5.0Read Review
REI Co-op Trailbreak 203 lbs 07 oz29 FSyntheticMummy$1094.0Read Review
REI Co-op Magma 301 lb 4 oz.30 Degrees (3-season bag)850 fill power downMummy$$4.5Read Review
NameWeightTemp RatingInsulationShapePriceRatingReview
Want to learn more about a technical term? Check out our Features Explained section below.

Need buying advice? Take a look at these Things to Consider.

Reviews - The Best Bike Touring Sleeping Bag

Marmot NanoWave 45

  • Fill Weight: 13.9 oz
  • Insulation: Synthetic
  • Length: 72”
  • Weight: 1.8 lbs
  • Shape: Mummy
  • Volume: 05.0 L
  • Temp Rating: 56 F
  • Stuff Sack Size: 6x11”
  • Fill Power: Spirafil
  • Snagless Draft Tube Keeps Cold Air From Seeping Through Zipper
  • Zipper Wraps Around Foot Box For Easy Ventilation
  • “Feely” Drawcords For Easy Adjustment Even In The Dark
  • Synthetic Proprietary Insulation Traps Warmth Even When Wet


The Marmot Nanowave 45 is an affordable summer sleeping bag that won’t take up too much room in your backpack. Not only is it cheap, it’s practical and functional which is why it’s our pick for the best backpacking sleeping bag under $100. 

In awarding it the winner of the best under $100 category, we realize it’s not quite fair because most other bags on this list have a temperature rating down to around 20 degrees. However, if you’re on a super tight budget and plan to camp from mid-spring to mid-fall, the Nanowave 45 is hard to beat.

Which leads us to the biggest downside of this bag, it is only good in mild weather. But, not everyone needs or wants a super warm bag and if you combine the Nanowave with an extra warm sleeping pad and a thermal liner, you might be able to extend the temperature range of this bag down a few degrees, making it much more versatile. If you’re looking for a warmer budget backpacking sleeping bag, check out the REI Trailbreak 20 which is also featured on this list. 

The Marmot Nanowave is also available in a 55-degree and 35-degree version.

Sea to Summit Spark SpII 28

  • Fill Weight: 11.0 oz
  • Insulation: Down
  • Length: 72”
  • Weight: 1 lbs 02 oz
  • Shape: Mummy
  • Volume: 06.6 L
  • Temp Rating: 38 F
  • Stuff Sack Size: 4x7”
  • Fill Power: 850
  • Superlight Fabrics For Minimum Weight And Size
  • Vertical Chest Baffles Prevent Down Migration, Keeping The Bag Lofty And Warm
  • Ultra-Dry Treated Water-Resistant Down
  • ⅓ Length Zipper Minimizes Weight
Sea to Summit SPII 28

If you’re touring in relatively warm weather and looking for the absolute lightest, smallest option of the market, here it is. The Spark SPL 40 weighs just over a pound and packs down to an astonishing 4×7 inches. If you don’t have space in your panniers you could almost put it in your pocket! Don’t expect a large array of features: everything that can be trimmed back has been. Even the zipper has been cut to ¾ length. This one is all about carrying less of everything.  

This bag uses the lightest possible shell fabrics as part of that focus on dropping every possible ounce. That leaves it a bit on the fragile side, so you’ll need to be careful to keep it away from sharp objects or tear-prone situations. It’s probably not the best choice if there will be a dog in your tent!

Therm-a-Rest Hyperion

  • Insulation: 900 fill-power down
  • Length: 72”
  • Weight: 1 lb. 6 oz.
  • Shape: Mummy
  • Temp Rating: 20 degrees (winter bag)
  • Stuff Sack Size: 6x8”
  • Treated Hydrophobic Down Resists Water
  • Zoned Insulation Puts Warmth Where You Need It
  • Water-Repellent Shell Fabric Keeps Insulation Dry
  • SynergyLink Connectors Link Bag With A Therm-A-Rest Pad
Therm-a-Rest Hyperion


Turns out you really can have it all: the Hyperion 20 weighs just over a pound, packs into a 6×8” stuff sack, and will keep you warm well into sub-freezing conditions. Treated down and a durable water-resistant shell provide exceptional resistance to moisture. The down is carefully distributed to eliminate cold spots and put the warmth where you most need it. The bag is even designed to integrate with your Therm-A-Rest pad, so you stay on your pad and receive the full benefit of its insulating capacity.

The only real downside to all this is the price: this is an expensive piece of gear. If you’re going to be touring in cold weather and you want the optimal combination of high warmth, low weight, and low bulk, it’s worth the cost.

REI Co-op Trailbreak 20

  • Fill Weight: N/A
  • Insulation: Synthetic
  • Length: 72”
  • Weight: 3 lbs 07 oz
  • Shape: Mummy
  • Volume: 12.0 L
  • Temp Rating: 29 F
  • Stuff Sack Size: 9x16”
  • Fill Power: Polyester
  • 3-Panel Hood Contours Closely To The Head
  • Face Muffler And Draft Tube Keep Cold Air Out
  • Durable Water Repellent Shell Keeps Insulation Dry
  • Compression Stuff Sack Packs Small


Cold-weather touring on a budget requires some compromises, and a sleeping bag is likely to be one of them. We all want a light, compact bag, but when the temperature drops into the sub-freezing range, warmth is more important. If you’ll be riding in the rain and you want a synthetic-fill bag that can insulate even when wet, or if you just don’t want to spend the cash for a high-end down bag, the Trailbreak 20 will deliver affordable warmth down to sub-freezing levels. 

The downside will be a bit more bulk and weight than you might want to carry on a bike trip, but if the alternative is frigid nights, it might be worth it. This is a full-featured cold-weather bag that will keep you warm, and that’s worth a bit of extra weight! The weight and bulk penalty is not excessive considering the combination of warmth, quality, and price, so if you’re looking for an affordable cold-weather synthetic-fill bag, take a close look at this one.

REI Co-op Magma 30

  • Insulation: 850 fill power down
  • Length: 72”
  • Weight: 1 lb 4 oz.
  • Shape: Mummy
  • Temp Rating: 30 Degrees (3-season bag)
  • Stuff Sack Size: 4.75x13”
  • Generous Knee And Foot Space
  • Anti-Snag Strip And Hybrid Zipper Path For Easy Zipping And Unzipping
  • Contoured Hood With Two Adjustments
  • Insulated Yoke Prevents Heat Loss At Neck And Shoulders


Bike touring demands light, compact gear, and nothing delivers light, compact performance like a good down sleeping bag. The REI Magma 30 is one of the top all-around performers in the niche. It weighs in at just over a pound, packs small, and delivers an exceptional warmth-to-weight ratio. If you want an all-around 3-season bag that will serve in anything but extreme cold, this will be one of your top options.

This is a great choice if you need a bag to use in a wide variety of conditions. It’s likely to be on the warm side for pure summer conditions, so if you’re all about warm weather touring you might want to look for something with less loft. If you’re looking for versatility, look no further!




Size and weight are primary considerations in packing for a bike tour, but you’ll want to think about warmth and comfort as well: a lighter load during the day is a poor tradeoff for a series of shivering nights! Before you choose a sleeping bag for bike touring, you should have an honest assessment of the conditions you’ll be facing and your own personal preferences in bag size and warmth.

Temperature ratings are a good general guideline, but some individuals are “warm sleepers” or “cold sleepers whose comfort range can be well outside these guidelines. Knowing how much insulation and how much interior pace you prefer will help you select the right bag for you. There are a few choices to consider.


Almost all touring cyclists prefer the mummy shape, which is lighter and more compact than wider designs. Mummy bags vary considerably in width, so if you don’t like being wrapped too tight at night, you may want to choose a wider mummy bag.



Down is lighter and packs smaller than any other insulation. Synthetic insulation still has a place, especially for cyclists with limited budgets. The main drawback of down is that it doesn’t handle moisture well: the down can mat and clump and may need professional cleaning to restore its loft after getting wet. Modern treated down has much better water resistance than old school down insulation and many down bags now use DWR (durable water repellent) coatings to keep the insulation dry, but if there’s a chance of a real soaking, a synthetic-fill bag might be a better bet.



Temperature rating tests approved by the ISO and EN rating systems will produce two ratings for every product. The “comfort” rating provides comfort to an average sleeper, the “lower” limit is the minimum temperature at which the bag is recommended for use. A bag with these two numbers has probably been ISO or EN rated. Some manufacturers use their own ratings, based on their own experience.

Temperature ratings that work for one person may not work for another, so consider your own preferences and sleeping style. Remember that temperatures on your trip could get colder than you expect!



Many bag manufacturers classify sleeping bags in three general groups depending on the temperature rating of the sleeping bag.

  • Bags rated at 40 degrees (F) and above are considered summer bags
  • Bags rated from 15 to 39 degrees (F) are considered “three-season” bags
  • Bags rated below 15 degrees (F) are considered “winter bags”

Again, those temperatures may not match the seasons in your location!



REI has a good guide to buying a backpacking sleeping bag that you might want to read over before making your final decision about which bag is right for you from the list above.






The inner feathers of geese or ducks are the preferred insulator for sleeping bags. They are very light and very compressible, and they can be compressed over and over again without losing their ability to expand to their full loft. Several types of down are often seen in sleeping bag descriptions.


Also known as water-resistant down, this is down insulation that has been given a chemical treatment that allows it to resist moisture. These treatments are very effective and has made down a match for synthetics in all but the wettest temperatures. Even treated down will not stand up very well to full immersion or a total soaking!


RDS down comes from suppliers who meet strict standards for animal treatment.


Fill weight describes the ability of down to expand and fill space. Higher fill weight indicates higher quality down. The highest quality down is 800 to 900 fill weight. Higher fill weights are, naturally, more expensive.


Sleeping bags with synthetic insulation use mats of polyester fibers to fill out the bag and create insulating air space. Many manufacturers have proprietary names for the compounds and processes they use. Synthetic insulation is cheaper and handles water better than down, but it’s also heavier and bulkier.


Sleeping bags usually close with a full-length zipper on one side. Some have zippers on both sides for added ventilation. Left and right zipper bags of some brands can be zipped together to create a double sleeping bag. Not all bags have this feature, so check first if you will be sharing your bags!

Anti-Snag Zippers prevent bag fabric from getting sucked into the zipper, which can damage zippers and fabrics and can be difficult to disentangle.

Draft tubes are tubes of insulation-filed material that lie behind the zipper, preventing cold air from entering through the uninsulated zipper.


Shell fabrics hold the sleeping bag’s insulation in place. Ultralight bags may use very thin shell fabrics that are prone to ripping or punctures, so if you’re looking for the very lightest bag you should be prepared to treat the bag carefully. Many shell fabrics are coated to provide extra water resistance.


Baffles are compartments that hold insulation in place. Baffles prevent cold spots and keep down where it’s most needed, and manufacturers are constantly trying out new baffle designs and arrangements in an effort to improve insulating value.


Many sleeping bags come with two sacks: a loose bag for storage and a compression sack that squeezes the bag to its lowest possible volume for packing. Bags last longer if stored in the looser sack.


For more of our top bicycle touring gear recommendations, check out these popular buyer's guides:

Touring Bikes

Bike Handlebar Bags

Touring Tires

Panniers for Touring

Touring Saddles

Fat Bikes

About The Author

Steve Rogers operates an adventure travel business in the mountains of the northern Philippines, where he organizes and guides mountain biking, canyoneering, trekking, and white water rafting and kayaking trips. He has guided sea kayak trips among the islands of northern Palawan and sailed small catamarans up and down the coast of western Luzon. He owns an outdoor shop, accumulates excessive quantities of gear, and occasionally throws shields around. He is the primary author of Action Asia’s Adventure Travel Guide to the Philippines and has written extensively on a wide variety of topics.

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