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Weighing a mere 1 lb. 4 oz, defy the cold and rest better while moving through the mountains with the Hyperion. Built to provide a featherlight pack weight and high-performance warmth, the Hyperion 20F/-6C is among the lightest in its class without sacrificing an ounce of performance. The bag uses thermally-efficient box baffled construction in key areas to ensure warmth and comfort in an ultralight package. Designed with high-quality materials and Therm-a-Rest performance features, the Hyperion keeps your pack light, giving you the freedom to move quickly in the backcountry. Storage sack and compression stuff sack included. Weight: 580g / 1.25lbs Fill: 900 Fill Power Nikwax Hydrophobic RDS Goose Down Fill Weight: 360g / 12.5oz

The Hyperion 32F/0C sleeping bag is among the lightest in its class while still providing high-performance during backcountry pursuits. The bag uses thermally-efficient box baffled construction in key areas to ensure warmth and comfort in an ultralight package. Designed with high-quality materials and Therm-a-Rest performance features, the Hyperion keeps your pack featherweight without sacrificing an ounce of performance. Storage sack and compression stuff sack included Weight: 460g / 1.0lbs Fill: Fill: 900 Fill Power Nikwax Hydrophobic RDS Goose Down Fill Weight: 250g / 8.5oz

As the absolute lightest insulated air sleeping pad available, the NeoAir UberLite is the top choice for thru hikers and ounce counters, setting new standard for ultralight comfort for a handful of ounces. The unrivaled Triangular Core Matrix offers the best warmth-to-weight ratio of any air sleeping pad construction, creating a 2.3 R-value for a featherweight. The construction gives the 2.5 inch (6.4 cm) thick pad superior stability, boasting the most inches of weld for maximum camp comfort. The ultralight sleeping pad features the high-performance WingLock valve, allowing the pad to inflate three times faster thanks to a larger opening and one-way inflation. Like all Therm-a-Rest pads, the NeoAir UberLite is made in market to ensure quality and minimize environmental impact. The pad includes a breath-saving pump sack, compact stuff sack and field repair kit. Weight: 250g / 8.8oz R-Value: 2.3 (Summer)

For a minimal pack size and maximum performance, the Thermarest NeoAir XLite offers the gold standard in lightweight backpacking comfort. The unrivaled Triangular Core Matrix offers the best warmth-to-weight ratio of any air sleeping pad construction. The construction gives the 2.5 inch (6.4 cm) thick pad superior stability, boasting the most inches of weld for maximum camp comfort. The compact pad boasts a 4.2 value, allowing users to camp comfortably year-round. Available in several sizes, including a roomy regular wide, the XLite features the high-performance WingLock valve, allowing the pad to inflate three times faster thanks to a larger opening and one-way inflation. Like all Therm-a-Rest pads, the NeoAir XLite is made in market to ensure quality and minimize environmental impact. The pad includes a breath-saving pump sack, compact stuff sack and field repair kit. Weight: 340g / 12oz R-Value: 4.2 (3-4 Season)

When your backcountry pursuits demand extreme insulation and an ultralight packed size, alpinists and mountaineers turn to the NeoAir XTherm MAX. The unrivaled Triangular Core Matrix offers the best warmth-to-weight ratio of any air sleeping pad construction. The construction gives the 2.5 inch (6.4 cm) thick pad superior stability, boasting the most inches of weld for maximum camp comfort. The packable pad boasts a 6.9 R-value, allowing users to take it into the most extreme conditions. With the classic XTherm construction in a rectangular shape, the XTherm MAX features the high-performance WingLock valve, allowing the pad to inflate three times faster thanks to a larger opening and one-way inflation. Like all Therm-a-Rest pads, the NeoAir XTherm MAX is made in market to ensure quality and minimize environmental impact. The pad includes a breath-saving pump sack, compact stuff sack and field repair kit. Weight: 490g / 1.06lbs R-Value: 6.9 (Four Season)

Push further and move faster with the Parsec™ 20F/-6C mummy sleeping bag, bred for alpine starts and ultralight bivys. Engineered for your fast and light adventures, the Parsec delivers lightweight and packable warmth. Just like an alpinist precisely selects his rack or a skier carefully chooses her line, Thermarest took the time to dial in the small details that create comfort and security in the mountains. After you break camp, the mummy-style bag uses a compression sack to easily fit into your pack without weighing you down. Designed with high-quality materials and Therm-a-Rest performance features, the Parsec easily handles three-season bivys and long pushes into the backcountry. Bottom line, those that need their sleeping bag to go further choose the Parsec. Storage sack and compression stuff sack included. Weight: 910g / 2.0lbs Fill: 800 Fill Power Nikwax Hydrophobic RDS Goose Down

Packed with features needed for cold-weather camping, the Questar™ offers supreme comfort and versatility. When you need feature-packed comfort for frigid backcountry conditions, it’s time to pack the Questar 0F/-18C. Thermarest has loaded this bag with the comfort features that Therm-a-Rest bags are known for. The Thermarest SynergyLink™ Connectors integrate the bag with your sleeping pad while allowing our Zoned Insulation to keep fill where you need it most. The fit of the bag has been perfected in our onsite cold chamber to create our W.A.R.M. fit that allows room for multiple sleep positions without compromising thermal efficiency. Stuffed with water-resistant 650 fill Nikwax Hydrophobic Down certified by the Responsible Down Standard, the four-season Questar is ready for your next backcountry adventure. The Questar is offered in three sizes, and designed to fit both men and women. Compression sack and storage sack included. Weight: 1.21kg / 2.67lbs Fill: 650 fill power Nikwax Hydrophobic RDS Down Fill Weight: 820g / 1.81lbs

This lightweight alternative to the RidgeRest ® Solar mattress is coated with a layer of Therm-a-Rest's reflective ThermaCapture ™ technology that redirects radiant heat back to your body to amplify warmth. Working in conjunction with the classic RidgeRest® peaks and valleys, the SOLite mattress delivers exceptional insulation in an ultralight and virtually indestructible alternative for backcountry travelers. For maximum warmth, use reflective side-up. Weight: 400g / 0.88lbs R-Value: 2.1

Stretch knit top and extra-thick foam combine for unmatched self-inflating comfort for backpackers. For unprecedented comfort during your backcountry adventures, the Trail Pro brings year-round warmth and legendary Therm-a-Rest support. The self-inflating foam measures 3 inches (7.6 cm) and features our StrataCore construction, a design that provides the best warmth-to-weight ratio of any self-inflating foam construction. The Trail Pro’s 4.4 R-value allows adventurers to enjoy backpacking and camping year round. The versatile self-inflating pad features the high-performance WingLock valve, which has three-times the airflow rate of the classic valve thanks to a larger opening and one-way inflation. Like all Therm-a-Rest pads, the Trail Pro is made in market to ensure quality and minimize environmental impact. The pad includes a compact stuff sack. Weight: 820g / 1.81lbs R-Value: 4.4 (3-4 Season)

Lightest, most compact closed-cell foam pad with boosted warmth. Always a favorite of the ultralight elite, the Z Lite SOL expands upon the utralight performance of the Original Z Lite by adding our reflective ThermaCapture™ coating to capture radiant heat and increase overall warmth by nearly 15%. Factoring in the system of heat trapping dimples, the Z Lite SOL has an R-Value of 2.0, making it perfect for use on its own in warmer weather or layering under another pad for extra warmth in the cold. The proprietary foams are softer on top for extra comfort and denser on the bottom for extra durability, making the Z Lite SOL an idealclosed-cell foam pad for those in need of an ultralight, highly compact and super-reliable sleep system. Weight: 410g / 14oz R-Value: 2.0

Lightest most compact closed-cell mattress. Still a favorite of the ultralight elite, the Z Lite mattresses are the lightest, most compact closed-cell mattresses. Both the Z Lite SOL and the original Z Lite feature a compact accordion-style shape and heat-trapping dimples. The Z Lite SOL adds a reflective ThermaCapture™ coating that helps capture radiant heat, increasing overall warmth by nearly 20%. The proprietary foams are softer on top for extra comfort and denser on the bottom for extra durability. Wherever you’re headed, a Z Lite mattress is the right choice for ultralight warmth, durability and comfort. Weight: 410g / 14oz R-Value: 1.7

The AlphaLight Cutlery uses a durable aluminum combined with a sleek-yet-strong shape to create an extremely lightweight utensil at a surprisingly affordable price. By hard anodizing the aluminum it forms a kind of "exoskeleton," so the utensils can be slimmer and lighter. This hardened shell also encapsulates the aluminum, to eliminate the risk of the alloy leaching into food. PRODUCT DETAILS: -Ultra-light & strong aircraft aluminum alloy -Conforms to FDA food safety standards -Smooth matte finish -All pieces come with a mini carabiner -Note: the cleanser used in dishwashers will damage the anodization, so Alpha Cutlery should not be washed in a dishwasher

The Ascent™ down mummy sleeping bag redefines what versatile means in a sleep system. Complex construction and high-quality down keep you warm when it’s cold outside, while the triple-zipper Free-Flow Zip™ system ensures you stay cool and ventilated when the weather warms. Shaped to allow a natural sleeping position for comfort, the Ascent is light and compact enough to go everywhere your adventures may take you. Weight: 1.325kg / 2.92lbs Fill: 750+ Loft Ultra-Dry RDS Duck Down Fill Weight: 750g / 1.66lbs

The new Ether Light XT Air Sleeping Mat is perfect for warmer-weather backpackers and campers looking for a quiet, lightweight air sleeping mat that offers a high degree of comfort. The XT Air-Sprung Cells™ use loops of a strong, flexible material to provide a plush sleeping experience. The uprated 30D / 40D face fabric is quiet and durable, and the lamination technology continues Sea to Summit’s class-leading reliability. Our blog post "Which Sleeping Mat to Choose" has some helpful tips on picking the perfect air mat (or reasons why you might prefer a Self-Inflating sleeping mat) IS THIS AIR SLEEPING MAT…? Warm enough for four-season use? No. This air sleeping mat has a tested R-Value of 1.2, and is designed for use from late Spring to early Fall. Colder-weather users should choose the Ether Light XT Insulated version. Easy to inflate? Yes! The supplied stuff sack features an integrated Airstream Pump – just a couple of breaths will inflate the air mat. Suitable for backpacking? Yes. The Regular size weighs only 13.8 ozs / 390 g, and packs down to 3.5” x 7.5” / 9 x 19cm) – ideal for summer backpacking, bike touring and camping.

The new Women’s Ether Light XT Insulated Air Sleeping Mat offers a high degree of comfort at a low weight. Additional Thermolite® insulation (compared to the unisex model) provides three-season warmth for women backpackers. The uprated 30D / 40D face fabric is quiet and durable, and the lamination technology continues Sea to Summit’s class-leading reliability. IS THIS WOMEN'S INSULATED AIR SLEEPING MAT…? Suitable for backpacking? Yes. The Regular size weighs only 17.5 ozs / 495 g, and packs down to 4.5” x 9.5” / 11.5 x 24cm) – ideal for backpacking, bike touring and camping. Warm enough for four-season use? Close. This air sleeping mat has a tested R-Value of 3.5 which is enough insulation for sleeping from early Spring to Late Fall. Easy to inflate? Yes! The supplied stuff sack features an integrated Airstream Pump – just a couple of breaths will inflate the air sleeping mat. No dizziness for you, and practically no condensation moisture inside the air sleeping mat. Genius!

The Flame™ Ultralight Women's 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. The women’s specific mummy fit is narrower at the shoulder and wider at the hip, and features extra down compared to the unisex Spark models. The wider mummy shape between hips and knees allows you to sleep in a natural position without compressing the down insulation and creating cold spots. The bags shorter overall length and narrow shoulder girth helps reduce dead spaces and increase thermal efficiency Weight - 505g / 1.11lbs (Regular size) Fill: 850+FP RDS Goose Down

The Flame™ Ultralight Women's 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. The women’s specific mummy fit is narrower at the shoulder and wider at the hip, and features extra down compared to the unisex Spark models. The wider mummy shape between hips and knees allows you to sleep in a natural position without compressing the down insulation and creating cold spots. The bags shorter overall length and narrow shoulder girth helps reduce dead spaces and increase thermal efficiency Bag Fill - 850+FP RDS Goose Down Bag Weight - 665g (Regular size)

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. Weight - 340g / 12oz (regular size) Fill - 850+ Fill Power Ultra Dry RDS Goose Down

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. Weight: 490g / 17oz (regular size) Fill: 850+ Fill Power Ultra Dry RDS Goose Down Fill Weight: 300g / 10.6oz

The THERMOLITE® Reactor™ Extreme is the warmest backpacking knit sleeping bag liner offered by Sea to Summit. The hollow fiber threads work just like the hollow fur of a polar bear in that they trap heat effectively. When the mercury drops you'll appreciate the mummy shape and drawcord hood with mini cord lock attached. Depending on your environment and sleep conditions, this liner can increase your sleeping bag warmth by up to 14C/25F.

The Reactor is made from Thermolite®, a hollow core fiber that provides extraordinary warmth for its weight and remains extremely breathable. Adds up to 14 degrees F / 8 degrees C of warmth to a sleeping bag or, used alone, is the ideal warm weather bag.

Designed with ultralight backpacking in mind the Ultra-Sil™ Nano™ Dry Sack is made from lightweight 15D siliconized Nylon. With the use of featherweight 15D fabric, these are perfect for use inside your pack to keep gear organized and dry. Using a hypalon roll-top closure that doesn't wick moisture, an oval base for easy packing, these are fully seam sealed for water resistance. Ideal for backpacking, climbing, cycle touring and modular packing where lightweight and low bulk is key.

The Ultralight Air Mat was awarded Gear of the Year by National Geographic Adventure and earned Best New Gear from Gear Institute in 2014 and there is little wonder why. This is the durable, compact, lightweight sleeping mat for gram counters who don't want to sacrifice comfort for weight. Using Air Sprung Cell™ technology with a single layer of medium resolution cells, this offers a minimal packed size and weight. Ideal for adventure racers, lightweight backpack or bikepacking adventures or anyone looking for Ultralight comfort.

If you are looking for a lightweight sleeping pad, but you will not compromise on comfort, durability, insulation or ease of use, look no further. The Air Sprung Cell™ design delivers stability and support, while our lamination and weld quality set new standards for reliability. Thermolite® and Exkin Platinum® insulation deliver performance that is tested in the Swiss Federal Material Labs (EMPA) to give an R-Value of 3.1, perfect for late spring through early fall camping. The patented multi-function valve and pump integrated into the stuff sack mean effortless inflation and deflation. IS THE ULTRALIGHT SLEEPING MAT...? Really comfortable being only 2” thick? Yes. Thickness is not the key factor in an air mattress; the number of points of suspension is. Your body weight is supported by 181 individual air-filled pockets (size Regular) Insulated well to protect me from the cold air and ground temps? Yes. Two types of insulation prevent radiant and convective heat loss – the mats have a tested R-Value of 3.1, and the lack of internal air movement means minimal loss of warmth compared to other designs. Noisy when I shift around in my sleep? No. The reflective material (Exkin Platinum®) and the outer laminate material are both very quiet. Your tentmate will thank you in the morning.

The latest version of the icon. SPEEDCROSS 5 GORE-TEX has a new GORE-TEX construction with a floating tongue that improves comfort and streamlines the overall look and feel of the shoe. It maintains the renown grip, outstanding cushioning, and precise fit that have made this shoe a favorite.

Take wing with these lightweight racing-flat trail runners. Built for speed, they feature a GORE-TEX® waterproof and breathable membrane upper and anti-debris mesh to keep out grit and stones. Sensifit construction wraps the foot for a close fit and seriously lugged outsoles grip loose or mucky surfaces so you can tear through technical soft ground.

The warmest of the Alpine Pro range, the Alpine Pro 800 is a warm mid-weight down-filled sleeping bag, designed for cold conditions and year-round mountain use. The Alpine Pro range is for those looking to balance warmth, weight and comfort. The Alpine Pro 800 is the warmest of the range making it well suited to winter use. This rugged bag offers protection and warmth in cold conditions. Its mummy taper shape is roomy and comfortable with an angled footbox that keeps your feet warm but still allows for movement. Made from the durable and water-resistant Pertex® Quantum Pro, the Alpine Pro 800 is hand filled in Derbyshire England with 650FP ethically sourced European Duck Down. This down is held in trapezoidal chambers designed to eliminate cold spots. Through refining and improving the mummy taper shape, alongside optimising the boxwall height within the chambers, we have ensured better down lofting to maximum warmth. The Alpine Pro 800 has an insulating internal 3D collar with a hood drawcord to keep out cold drafts, as well as a 3/4 length YKK zip with an anti-snag bonded zip guard. Other features include a handy internal stash pocket, stuff sack for transport and cotton sack for storage. Weight: 1.41kg / 3.11lbs Fill: 650FP ethically sourced European Duck Down Fill Weight: 800g / 1.76lbs

The Andes 1000 offers similar warmth to the Expedition range, in a more performance orientated shape, maximising warmth-to-weight and reducing pack size. With 1000g of high quality 800FP ethically sourced European Goose Down, the Andes 1000 is designed for use up to 8000m altitude or on exposed belays, in temperatures as low as -27°C. Styled in a ’mummy shape’ to reduce pack size, the Andes 1000 uses a combination of high quality Pertex® inner and outer fabrics to provide increased durability and windproof. Key features include longitudinal foot baffles to minimise down migration, chest baffles with internal Flowgate® technology and anti-snag webbing tape throughout. The Andes range of sleeping bags are hand-filled in Derbyshire, UK. Weight : 1.605kg / 3.54lbs Fill : 800FP ethically sourced European Goose Down

The Andes 800 offers similar warmth to the Expedition range, in a more performance orientated shape, maximising warmth-to-weight and reducing pack size. With 800g of high quality 800FP ethically sourced European Goose Down, the Andes 800 is designed for use up to 8000m altitude or on exposed belays, in temperatures as low as -22°C. Styled in a ’mummy shape’ to reduce pack size, the Andes 800 uses a combination of high quality Pertex® inner and outer fabrics to provide increased durability and windproof. Key features include longitudinal foot baffles to minimise down migration, chest baffles with internal Flowgate® technology and anti-snag webbing tape throughout. The Andes range of sleeping bags are hand-filled in Derbyshire, UK. Weight: 1.375kg / 48.5oz Fill: 800FP ethically sourced European Goose Down Fill Weight: 800g

The Andes 800 offers similar warmth to the Expedition range, in a more performance orientated shape, maximising warmth-to-weight and reducing pack size. With 800g of high quality 800FP ethically sourced European Goose Down, the Andes 800 is designed for use up to 8000m altitude or on exposed belays, in temperatures as low as -22°C. Styled in a ’mummy shape’ to reduce pack size, the Andes 800 uses a combination of high quality Pertex® inner and outer fabrics to provide increased durability and windproof. Key features include longitudinal foot baffles to minimise down migration, chest baffles with internal Flowgate® technology and anti-snag webbing tape throughout. The Andes range of sleeping bags are hand-filled in Derbyshire, UK. Weight: 1.39kg / 3.06lbs Fill: 800FP R.D.S Certified European Goose Down