Sleeping Bags

We offer a range of sleeping bags from backpacking ultralight to car-camping comfort. Built for all seasons and designed for people of all shapes and sizes. Find the bag that really fits you – and fits your adventure.

Spark Down Sleeping Bag
Spark Down Sleeping Bag
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Spark Down Sleeping Bag
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Camping & Backpacking Sleeping Bags

Lightweight technicalCamping & Backpacking Sleeping Bags

Sleeping Bags - Down vs. Synthetic Insulation

Both insulation types have their place; it just depends on where you’re headed and how you travel.

Down insulation:

  • Exceptional warmth-to-weight ratio
  • Packs down small for efficient travel
  • Best for dry, cold conditions

Synthetic insulation:

  • Performs better in damp or humid environments
  • Dries quickly and retains warmth when wet
  • Typically, more durable and easier to care for

Bags by Trip Type

Different trips call for different setups, but a few basic guidelines can help you narrow it down:

  • Ultralight trekking: A streamlined backpacking sleeping bag that prioritizes weight and packability
  • Weekend camping: A roomier camping sleeping bag focused on comfort and ease of use
  • Cold-weather expeditions: Heavier insulation, draft protection, and advanced construction for serious warmth
  • Travel and overlanding: Versatile designs that balance durability, comfort, and compact storage

Sleep Soundly On Every Adventure!

Wherever you’re headed, the right sleep system gives you the freedom to go farther and stay longer. Choose gear that works with you and settle in knowing it’s built to perform, night after night. Browse our full selection of sleeping bags to find your ideal options today.

Frequently Asked questions

What's the difference between a synthetic and down sleeping bag?

Synthetic Sleeping Bags: still insulates when wet. Up-front cost is lower, but heavier and bulkier and have a shorter lifespan.

Down Sleeping Bags: not ideal in very wet environments. Higher up-front cost, but lighter, packs smaller and lasts much longer.

Can you sleep on your stomach and side in a mummy sleeping bag?

Mummy sleeping bag shapes vary significantly; some are very narrow, and do not work well for side-sleepers/stomach sleepers. Sea to Summit mummy bags – particularly the Comfort and Versatility models like the Ascent - have enough room for the sleeper to sleep comfortably in any position.

Is this sleeping bag machine washable?

Do not wash a sleeping bag in a top-loader washing machine - a front-loader with a wool or silk program is OK. Use down soap (supermarket detergent residue sticks insulation fibers together). Dry the bag in a dryer (cool or warm) with a couple of clean tennis balls.

How do I care for/ store my sleeping bag?

Make sure your sleeping bag is completely dry before storing (in a cool, dry place) in a bag or pouch that will allow the bag to loft up. Pro tip - use a liner to reduce frequency of washing.

How to pack a sleeping bag in a backpack?

Pack bulkier sleeping bags in a compression sack (compression dry bag for wet environments). Pack compact sleeping bags in an eVac Dry Bag. Pro-tip: always have your sleeping bag inside your pack at the bottom: mounted externally, they can snag on branches.