Antelope StormShield – Weather-Resistant Alpine Sleeping Bag for Cold, Wet, and Windy Conditions

The Antelope StormShield is a weather-resistant alpine sleeping bag designed to handle freezing temps, snow, and howling wind without adding unnecessary weight. With a 5°F rating and weighing only 2 lb 9 oz, it’s built for mountaineers, ski tourers, and backpackers facing harsh, unpredictable environments.

Filled with 26 ounces of premium 850+ fill power goose down, the Antelope delivers serious warmth without bulk. Its StormShield™ shell fabric—a windproof, water-resistant microfiber—adds critical protection against moisture and spindrift while remaining breathable. Whether you’re bivying above treeline or hunkered down during a storm, this bag keeps insulation dry and lofted.

The slightly wider cut offers comfort for side sleepers or those wearing layers, while maintaining thermal efficiency. A full down-filled collar and insulated draft tube seal in warmth, and the contoured hood adjusts easily for a secure, heat-trapping fit. The full-length YKK zipper allows for easy entry and ventilation.

This bag thrives in cold, wet, and windy conditions—perfect for alpine climbs, early spring traverses, or exposed ridgelines. It’s also ideal for high-altitude camps where space, weight, and warmth all matter.

Handmade in the USA, the Antelope StormShield reflects Western Mountaineering’s commitment to quality, ethical sourcing, and performance-driven design. When your adventure leads to snow-covered benches in the Sierra or icy ledges in the Rockies, trust the Antelope to deliver lasting warmth, packability, and protection.

For adventurers who don’t wait for perfect forecasts, this is your reliable, all-season alpine companion.

Features

Explanation

Filled with 850+ Fill Power ethically-sourced premium goose down Continuous baffles allow you to shift down for more insulation in colder weather Weather-resistant StormShield shell protects against extreme wind and moisture, while maximizing inner breathability StormShield-lined Insulated Draft Tube blocks cold air and keeps the torso better insulated Three-Dimensional Insulated Draft Collar provides barrier against heat loss Full-length #5 YKK zipper provides a smooth, easy unzipping experience while being durable in cold weather Comes with ultralight stuff sack and breathable mesh storage bag 2 lbs. 10 oz. Total Weight

Specifications

• US
• Metric

Shape	Mummy
Temp Rating	5°F
Fill	850+ Power Goose Down
Color	Neon
Country of Origin	USA
Fabric	StormShield
Loft	7" in
Inside Girth shdr/hip/foot	5'6" 62"/53"/39" 6'0" 62"/53"/39" 6'6" 63"/54"/39"
Fill Weight	5'6" 24 oz 6'0" 25.5 oz 6'6" 28 oz
Total Weight	5'6" 2 lb 8 oz 6'0" 2 lb 10 oz 6'6" 2 lb 12 oz
Stuff Size	5'6" 9"x18" L 6'0" 9"x18" L 6'6" 9"x18" L

Shape	Mummy
Temp Rating	-15°C
Fill	850+ Power Goose Down
Color	Neon
Country of Origin	USA
Fabric	StormShield
Loft	18 cm
Inside Girth shdr/hip/foot	165cm 157/135/99 cm 180cm 157/135/99 cm 200cm 160/137/99 cm
Fill Weight	165cm 672 g 180cm 718 g 200cm 784 g
Total Weight	165cm 1120 g 180cm 1178 g 200cm 1232 g
Stuff Size	165cm 23x46 cm L 180cm 23x46 cm L 200cm 23x46 cm L