Winter (-16C and Colder)

Curl up in comfort with the Women's Ouray 0° Sleeping Bag. With 650-fill-power down plus a cinchable draft collar to prevent heat loss, this sleeping bag is built for overnights in temps down to single digits. The women-specific cut keeps warmth where you want it, and dual-side zips make it easy to climb in and out. Looking for more room? Open the footbox for space to stretch or zip it up for extra warmth. Unzip the extended zipper flaps on extra-cold nights for blanket-like coverage. Bag Weight: 1.74 kg / 3.84 lbs Fill: Down defender, 650 Fill Power, Duck Down Fill Weight: 1.09kg / 2.41 lbs

Sonic is built to be the only bag you need from -20°F to 40°F. The Backpacker Editors’ Choice award-winning big-mountain bag offers exceptional warmth and tuneability with a reduced environmental impact. This bag features our next-generation Thermo Gill™ vents, with a new multistage zipper system that dramatically increases the usable temperature range of the bag and allows fine-tuning of comfort from within. Sonic’s chevron baffle construction better compartmentalizes down, eliminating migration and keeping the down evenly lofted. (Not to mention, it looks awesome.) The shell and liner fabrics are 100% recycled fabrics and bluesign® approved, and the premium 800 FP hydrophobic down is 100% Responsible Down Standard (RDS) certified. Years of history in the field yielded detailed upgrades on this bag, including a perfected profile, redesigned draft collar, and bolstered draft tubes. The proven Nemo Toester™ footbox keeps feet warmer, provides a waterproof barrier against tent wall condensation, and protects down from moisture while drying damp clothes inside the footbox. Adaptable to whatever the mountain throws at it, Sonic continues to reverberate as the ultimate extreme weather companion. Bag Type: Mummy Bag Weight: 1.47kg / 3.25lbs Fill: 800 FP PFC-Free, RDS certified hydrophobic down? Fill Weight: 790g / 1.75lbs Compressed Volume: 9.6L

A warm, 650FP duck down sleeping bag with a recycled, wind resistant Pertex® Quantum outer. Designed with a comfortable, wide shape and women’s specific fit, it's ideal for those buying their first down sleeping bag for use in cold conditions. The Ascent 700 is a warm bag with a comfortable, wide mummy fit. Filled with 700g of 650FP goose down and with space for wearing additional layers if needed, this bag can be used in cold temperatures. Ideal for three season use and spring conditions similar to those in the UK, New Zealand or Scandinavia. The women’s specific shape is slightly shorter in length, narrower at the shoulders, and wider at the hips than the regular fit bag for improved efficiency. The Ascent is built with a lightweight and durable, recycled Pertex® Quantum outer fabric and recycled nylon lining. It has trapezoid shaped, boxwall baffles that stack neatly together, encouraging the hydrophobic duck down inside to loft fully and reducing the appearance of cold spots. Hand-filled in the UK, all our down bags benefit from never having had their down compressed before use, maintaining the down’s loft and warmth. The generous mummy fit with wide foot box provide a spacious feel for an easy night’s sleep, and the close-fitting neck baffle keeps the heat in when the temperature drops. It has a ¾ length main zip with a down filled baffle to keep out the draught. Practicalities are taken care of with an internal zipped stash pocket that easily fits a phone or a headlamp, a cotton storage sack and a compression stuff sack to ensure a manageable pack size and protection on the road. Exploring with a partner or want extra space? Pick up a left and a right zipped bag and you can zip them together. Bag Weight: 1.24 kg / 2.73 lbs Fill: 650FP European Duck Down with Nikwax Fluorocarbon-Free Hydrophobic Finish Fill Weight: 700 g / 1.54 lbs Bag Shape: Wide Mummy

A very warm, 650FP duck down sleeping bag with a recycled, wind resistant Pertex® Quantum outer. Designed with a comfortable wide shape and women’s specific fit, it's ideal for those buying their first down sleeping bag for use in cold, winter conditions. The Ascent 900 is a very warm bag with a comfortable, wide mummy fit. Filled with 900g of 650FP goose down and with space for wearing additional layers if needed, this bag can be used in cold temperatures. Ideal for four season use, in winter conditions similar to those in the UK, New Zealand or Scandinavia. The women’s specific shape is slightly shorter in length, narrower at the shoulders, and wider at the hips than the regular fit bag for improved efficiency. The Ascent is built with a lightweight and durable, recycled Pertex® Quantum outer fabric and recycled nylon lining. It has trapezoid shaped, boxwall baffles that stack neatly together, encouraging the hydrophobic duck down inside to loft fully and reducing the appearance of cold spots. Hand-filled in the UK, all our down bags benefit from never having had their down compressed before use, maintaining the down’s loft and warmth. The generous mummy fit with wide foot box provide a spacious feel for an easy night’s sleep, and the close-fitting neck baffle keeps the heat in when the temperature drops. It has a ¾ length main zip with a down filled baffle to keep out the draught. Practicalities are taken care of with an internal zipped stash pocket that easily fits a phone or a headlamp, a cotton storage sack and a compression stuff sack to ensure a manageable pack size and protection on the road. Exploring with a partner or want extra space? Pick up a left and a right zipped bag and you can zip them together. Bag Weight: 1.475 kg/ 3.25 lbs Fill: 650FP European Duck Down with Nikwax Fluorocarbon-Free Hydrophobic Finish Fill Weight: 900g / 1.98 lbs Bag Shape: Wide Mummy

The warmest in the Ascent range, the Ascent 1100 is a 650FP duck down-filled, adventure-ready sleeping bag with a recycled Pertex® Quantum outer. Designed with a comfortable wide shape and women’s specific fit, it's ideal for those buying their first down sleeping bag for extremely cold conditions. The Ascent 1100 is an extremely warm bag with a comfortable, wide mummy fit. Filled with 1100g of 650FP goose down and with space for wearing additional layers if needed, this bag can be used in seriously cold temperatures. Ideal for winter use or even as high altitude, base camp refuge. The Ascent is built with a lightweight and durable, recycled Pertex® Quantum outer fabric and recycled nylon lining. It has trapezoid shaped, boxwall baffles that stack neatly together, encouraging the hydrophobic duck down inside to loft fully and reducing the appearance of cold spots. Hand-filled in the UK, all our down bags benefit from never having had their down compressed before use, maintaining the down’s loft and warmth. The women’s specific shape is slightly shorter in length, narrower at the shoulders, and wider at the hips than the regular fit bag for improved efficiency. The generous mummy fit with wide foot box provide a spacious feel for an easy night’s sleep, and the close-fitting neck baffle keeps the heat in when the temperature drops. It has a ¾ length main zip with a down filled baffle to keep out the draught. Practicalities are taken care of with an internal zipped stash pocket that easily fits a phone or a headlamp, a cotton storage sack and a compression stuff sack to ensure a manageable pack size and protection on the road. Exploring with a partner or want extra space? Pick up a left and a right zipped bag and you can zip them together. Bag Weight: 1.67 kg / 3.68 lbs Fill: 650FP European Duck Down with Nikwax Fluorocarbon-Free Hydrophobic Finish Fill Weight: 1.10 kg / 2.43 lbs Bag Shape: Wide Mummy

Designed in conjunction with renowned polar explorer Eric Larsen, the Polar Ranger -20F/-30C down sleeping bag is built for the coldest places on earth. Previously a recipient of Backpacker Magazine’s Editor’s Choice Award, the lightest and most feature-rich bag in its class just got better. It utilizes cutting edge box-baffled construction and is filled with highly compressible, PFC-free 800-fill Nikwax Hydrophobic Down™. This advanced down maintains its loft and warmth longer, even in the challenging conditions of extended expedition use in the arctic cold. It absorbs 90% less water and dries 3x faster than untreated down—a big plus on long trips where periodic drying is required. The ultralight shell and soft liner are made from planet-friendly GRS-certified 100% recycled nylon. A unique snorkel hood with a magnetic closure helps seal in warmth while routing exhaled moisture away from the bag to preserve loft. Drafts are kept at bay by extensive, overstuffed draft tubes and a pair of side vents allow for custom ventilation while freeing your arms while still in the bag. Other features include an insulated Toe-asis™ foot-warming pocket, SynergyLink™ Connectors to link bag and sleeping pad, an interior stash pocket, external loops for attaching a quilt or blanket for more warmth, and an anti-snag YKK® zipper. Weight: 1.48 kg / 3.25lbs Fill: 800 Fill Goose Nikwax Hydrophobic Down RDS Fill Weight: 970g / 2.14 lbs