Sleeping Bags

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The Spark™ Ultralight Mummy Sleeping Bag Series spans everything from an ultralight down-filled liner to a mid-winter fast-and-light sleeping bag. Each model uses premium materials and no-frills design to provide cutting-edge performance for the designed end-use. Ultralight does not mean ultra-tight: The Spark mummy sleeping bags are snug but still have adequate girth for the performance-oriented backcountry user.

The Trek™ down sleeping bag brings the comfort of a tapered-rectangular mummy shape and the versatility of a dual-zip ventilation system to wherever your travels may take you. The full-length side zipper and secondary foot box zipper allow you to increase ventilation or open the Trek completely flat like a comforter, and the quality down will keep you warm and snug on chilly nights. The broader mummy cut gives you room to move inside the bag, regardless of the sleeping position you may adopt. A Regular Wide model is available for those who really appreciate extra girth. Light and compact, the Trek might just become your favorite trekking / backpacking / travel / camping down sleeping bag.

Seventy percent of people sleep on their side, yet mummy bags are not designed to accommodate this. Updated with new contours, Disco™ continues to reign as the ideal down backpacking bag for side-sleepers, offering the plushest comfort possible on the trail. The classic Spoon™ shape provides a generous cut at the elbows and knees so side sleepers can shift positions comfortably throughout the night, while still packing remarkably small. Premium 650FP hydrophobic, PFC-free, RDS Certified down ensures traceability throughout the supply chain. These 3-season backpacking bags are loaded with features, including Thermo Gills™ that help regulate temperature during the night, Blanket Fold™ that provides tucked-in comfort, and a waterproof/breathable footbox to withstand tent condensation. Left-sided zippers on Men’s and right-sided zippers on Women’s allow Disco™ to zip together for a double version of these favorite sleeping bags.

The Trek™ down sleeping bag brings the comfort of a tapered-rectangular mummy shape and the versatility of a dual-zip ventilation system to wherever your travels may take you. The full-length side zipper and secondary foot box zipper allow you to increase ventilation or open the Trek completely flat like a comforter, and the quality down will keep you warm and snug on chilly nights. The broader mummy cut gives you room to move inside the bag, regardless of the sleeping position you may adopt. A Regular Wide model is available for those who really appreciate extra girth. Light and compact, the Trek might just become your favorite trekking / backpacking / travel / camping down sleeping bag.

Winner of Outside Magazine's 2021 Gear of the Year Award! Specifically designed for those who sleep on their sides, the patent pending Sidewinder Series was engineered to ensure warmth, comfort, and ease of use no matter which side you’re on. Constructed with features you expect from a traditional mummy bag with additional body mapped insulation to optimize warmth where you need it and minimize pressure points and other ‘side effects’. The Sidewinder SL is a side sleeper’s dream bag with technical features that roll seamlessly from one adventure to the next, and from one side to the other at night.

This aptly named sleeping bag and down blanket is the traveler's best friend. Whether you are on a summer bike tour, or a hut trip, or couch surfing, or simply stuck at an airport or ferry terminal, the Traveller unpacks from an almost impossibly small compression sack to reveal a rectangular sleeping bag which can also unzip to form a quilt. Two different fill weights of 750+ loft RDS-certified ULTRADRY Down™ are available: both models feature a drawcord foot box which cinches tight for warmth or opens for ventilation.

WInner of Outside Magazine's 2021 Gear of the Year Award! Are you a side sleeper? The Sidewinder SL and Camp sleeping bags are engineered to be more comfortable for side sleepers with a long, ambidextrous zipper that stays out of the way when sleeping on your side and when rolling side to side. Packed with the technical features of a traditional mummy bag, with wiggle room where you need it and extra insulation placed at pressure points, reducing "side-effects" for great nights in the backcountry. But really, with lofty fills and soft materials, these bags provide optimized warmth and comfort in any position you settle into.

Winner of Outside Magazine's 2021 Gear of the Year Award. Specifically designed for those who sleep on their sides, the patent pending Sidewinder Series was engineered to ensure warmth, comfort, and ease of use no matter which side you’re on. Constructed with features you expect from a traditional mummy bag with additional body mapped insulation to optimize warmth where you need it and minimize pressure points and other ‘side effects’. The Sidewinder SL is a side sleeper’s dream bag with technical features that roll seamlessly from one adventure to the next, and from one side to the other at night. Our Women’s specific bags differ in shape and fill weight with a less drastic taper from shoulders, to hips, to feet - reducing cold spots and creating more warmth where it counts.

This aptly named sleeping bag and down blanket is the traveler's best friend. Whether you are on a summer bike tour, or a hut trip, or couch surfing, or simply stuck at an airport or ferry terminal, the Traveller unpacks from an almost impossibly small compression sack to reveal a rectangular sleeping bag which can also unzip to form a quilt. Two different fill weights of 750+ loft RDS-certified ULTRADRY Down™ are available: both models feature a drawcord foot box which cinches tight for warmth or opens for ventilation. Lighter than some sleeping bag liners and just as compact, find out why the Traveller is the ideal companion on the road

The Original Puffy Blanket combines the same technical materials found in premium sleeping bags and insulated jackets to keep you warm and cozy indoors and out.

This Spoon™ shaped Men’s synthetic backpacking bag is designed for side sleepers, with generous room at elbows and knees. Thermo Gills allow for maximum temperature regulation and premium synthetic withstands moisture.

Fun or technical? You decide. The Honcho Poncho offers extra warmth and water resistance for any outdoor activity as a blanket or poncho. Wear it while relaxing around camp before layering it with your sleeping system for extra warmth through the night. The stylish, synthetic-insulated poncho easily packs down into the kangaroo pocket so that you can pack it anywhere you roam. Water-Resistant Warmth: Efficient and compressible eraLoft™ insulation uses hollow fibers to reduce weight without sacrificing warmth. Versatile: Use at camp, at the game or anywhere you want a little warmth and freedom. Outdoor Protection: Offers a barrier against wind and rain with its water-resistant and breathable shell. Handy: Kangaroo pocket warms hands and top zip pocket stows essentials. Packable: Packs into its own storage pocket for go-anywhere convenience.

The Original Puffy Blanket combines the same technical materials found in premium sleeping bags and insulated jackets to keep you warm and cozy indoors and out.

The Thermolite ® Fleece Liner is the warmest of our Reactor series and can be used to extend the warmth of your sleeping bag or can also double as a stand-alone summer bag. - The quarter zip makes it easier to get in and out of, and the paneled hood can be drawn in when maximum warmth is required - Smaller and warmer than other fleece liners - Technical mummy shape with one-handed, easy to operate draw string hood - Quarter zip makes it easy to get in and out - Can be used as a stand-alone sleeping bag in warmer temperatures

Pillow pocket provides a clean and secure place for a pillow, or stuff it with soft article of clothing Suresoft brushed polyester lining is warm and comfortable Drawcord at shoulder – use it to trap heat in and keep the cold out Different shape and colour cordlocks used for ease of use at night 2-way nylon coil zipper allows for venting at foot; reversible slider with hi visibility fabric Anti-snag zipper tape, and insulated draft tube behind zipper 4 fabric loops allow for attached cord to hold sleeping pad in place Compression carry bag with 2 YKK quick release buckles Hotcore sleeping bags of the same dimensions can be opened and zipped together around the outside edge

The THERMOLITE® Reactor™ Extreme liner is Sea to Summit’s warmest knitted sleeping bag liner. If your adventures take you to colder climates, the Reactor Extreme will add plenty of warmth to a sleeping bag. In warmer weather, it can be used a ‘stand alone’ sleeping bag. The hollow core fibers of the THERMOLITE® fabric work like hollow polar bear or caribou fur – along with the knitted structure, this traps plenty of insulating air. Super soft and amazingly stretchy, the Reactor Extreme uses a heavier version of THERMOLITE® to provide extra warmth for an incredibly comfortable night’s sleep. Use one to build your cooler-weather sleep system and to help to keep your sleeping bag clean, too.

The Cooper R-7 is HotCore's smallest and lightest sleeping bag. It is great for warm weather camping, travel, and as an insulated liner to give a rectangular sleeping bag a temperature boost.?

Extend the life of your sleeping bag and trap a little extra warmth with the Sea To Summit Thermolite Reactor Plus Compact-Length Mummy Liner. Built with insulating Thermolite fabric, this liner traps heat without over-bulking your pack. Furthermore, it keeps the inside of your bag clean and gives it a break from the wear and tear of normal use.

The "Reactor" is made from Thermolite®, a hollow core fiber that provides extraordinary warmth for its weight and remains extremely breathable. Adds up to 15 degrees F / 8 degrees C of warmth to a sleeping bag or, used alone, is the ideal warm weather bag.

The Expander liner is made from a premium stretch knit poly-cotton, making it super stretchy and even warmer than a standard cotton weave liner. The anti-microbial treatment keeps microbial life, thus bad odors, at bay which also helps prolong the life of your liner and sleeping bag; it won't wash out of the liner and does not use nano-sized particles.