Antelope MF – Lightweight Alpine Sleeping Bag

The Antelope MF is a lightweight alpine sleeping bag built for summer mountaineering and high-altitude backcountry objectives. At just 2 lbs 7 oz, it delivers dependable warmth without weighing you down.

This bag excels in rugged conditions. The MicroLite XP™ shell provides water resistance and durability. It shields the 850+ fill power goose down from condensation and spindrift while remaining breathable.

A full down-filled draft collar and insulated draft tube lock in heat. The efficient mummy shape improves thermal retention without adding bulk. Whether you’re camped on a wind-blasted ridge or inside a snow-lined bivy, the Antelope MF helps you stay warm and sleep well.

Designed for climbers, alpinists, and backpackers, this bag balances performance and packability. It fits easily into your alpine kit and holds up through long miles and variable mountain weather.

The Antelope MF is rated for colder summer nights in the mountains. It’s ideal for shoulder-season trips or elevations where frost is common. If you’re venturing into exposed terrain, this is the bag that helps you rest and recover with confidence.

Use it for glacier approaches, Sierra traverses, or extended alpine routes where weight, warmth, and reliability matter. The materials, cut, and construction are all optimized for real-world mountain conditions.

Proudly made in the USA, the Antelope MF is part of Western Mountaineering’s trusted legacy of high-performance backcountry sleep systems. It’s a bag you’ll reach for when your next summit push calls for lightweight warmth and weather protection.

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 Full-length #5 YKK zipper provides a smooth, easy unzipping experience while saving weight Insulated Draft Tube blocks cold air and keeps the torso better insulated Durable 20 denier MicroLite XP™ outer shell stays more breathable and water resistant longer than traditional polyesters Fully insulated draft collar seals in inner heat without adding much weight Comes with ultralight stuff sack and breathable mesh storage bag 2 lbs. 7 oz. Total Weight

Specifications

• US
• Metric

Shape	Mummy (w/ full collar)
Temp Rating	5°F
Fill	850+ Power Goose Down
Color	Royal Blue/Black
Country of Origin	USA
Fabric	20D Microfiber
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" 26 oz 6'6" 28 oz
Total Weight	5'6" 2 lb 5 oz 6'0" 2 lb 7 oz 6'6" 2 lb 9 oz
Stuff Size	5'6" 8"x17" M 6'0" 8"x17" M 6'6" 8"x17" M

Shape	Mummy (w/ full collar)
Temp Rating	-15°C
Fill	850+ Power Goose Down
Color	Royal Blue/Black
Country of Origin	USA
Fabric	20D Microfiber
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 680 g 180cm 735 g 200cm 795 g
Total Weight	165cm 1050 g 180cm 1105 g 200cm 1160 g
Stuff Size	165cm 20x43 cm M 180cm 20x43 cm M 200cm 20x43 cm M