Western Mountaineering Lynx MF Sleeping Bag - Winter Bag to -23°C

The Western Mountaineering Lynx MF sleeping bag delivers serious insulation for winter mountaineering without excessive weight. With 22cm (8.5") of loft and 850+ fill power goose down, it's rated to -23°C and weighs around 1.4kg.

V-Block side baffles control the down so it stays evenly distributed, eliminating cold spots and improving heat retention, while a full draft collar and insulated draft tubes block cold air. The 20D MicroLite XP shell is breathable and water-resistant for harsh conditions, and the efficient mummy fit retains heat with minimal bulk, making it one of the warmest bags in its weight class. Choose the Lynx MF for winter mountaineering, ski touring, cold alpine nights and high-altitude trips where you need dependable sub-zero warmth.

Why you'll love it

• Extreme warmth – rated to -23°C with 22cm (8.5") of loft
• Lightweight for its class – around 1.4kg
• 850+ fill power goose down – exceptional warmth-to-weight and loft retention
• V-Block side baffles – even insulation with no cold spots
• Full draft collar and insulated draft tubes – seal in warmth

Good to know

• Shell: 20D MicroLite XP, breathable and water-resistant
• Weights: 165cm 1360g; 180cm 1415g; 200cm 1500g
• Fill weights: 165cm 850g; 180cm 905g; 200cm 965g
• Girth (shoulder / hip / foot): 165cm 155 / 137 / 99cm; 180cm 157 / 137 / 99cm; 200cm 160 / 140 / 99cm
• Packed size: 23 x 46cm, all sizes
• Sizes in this listing: 5'6" (165cm), 6'6" (200cm); colour Blue
• Includes an ultralight stuff sack and a breathable mesh storage bag
• Made in the USA

Who it's for

Winter climbers, ski tourers, alpine mountaineers and cold-weather campers at any level who need an expedition-ready bag for sub-zero conditions.