Western Mountaineering Antelope MF Sleeping Bag

-15°C Comfort Limit, 735g of 850+ Fill Power Down (US Method)
Weighs 1105g (Regular size)
Code: OC1390
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When the Sierras or the Rockies are your usual destinations and you need the maximum protection from your 3-season bag leave nothing to chance with our Antelope. Its roomy 62` / 158cm shoulder girth allows for comfort and the 7` loft from 735g / 26 oz of high lofting down provides warmth to minus 15°C.

The security of this bag is sealed with a full 3-Dimensional down filled collar and a robust draft tube.

While extremely weather resistant the MicroLite XP shell retains maximum breathability and its down filled collar is sewn with MicroLite XP fabric. These Antelopes take over in early spring and last through late fall. At a total weight of 1105g they are the most substantial 3-season bag available.

C. Continuous Baffle
D. Full down Collar
Microlite XP Shell
Highest Quality minimum 850+ Fill Down

Western Mountaineering down gear has an awesome reputation in the US and that reputation is beginning to build on this side of the pond. Very high quality materials design and construction results in the lightest bags available for a given warmth.

An example of their attention to detail is their quoted 850+ fill power down used in all their bags: WM quote this figure even though their down generally gets higher ratings in official tests this is because they feel that the official pre-testing preparation enhances the down quality!

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  • Continuous Baffle Construction
  • Full Down Collar
  • Microlite XP Shell
  • Full Length Baffled YKK Zipper
  • Highest Quality minimum 850+ fillpower down
  • Regular bag weighs 1105g
RatingLoft (cm)
Inside Girth
shldr/hip/foot (cm)
Fill Wt. Total Wt.Stuff size
Sac Size


(w/ full collar) 

165 / 5' 6"-15°C18157/135/99680 g1050 g20 x 43M
180 / 6'-15°C18157/135/99735 g1105 g20 x 43M
200 / 6' 6"-15°C18160/137/99790 g1160 g20 x 43M
Showing our 1 review for Western Mountaineering Antelope MF Sleeping Bag. Write a review ›
Review Summary - 5 out of 5 based on 1 rating.
February 17, 2015 | Trek & Mountain - January 2012

Western Mountaineering describe this bag as a 3-season bag but believe us when we say it's extremely warm, The high fill power of the down and the quality of it makes for an incredibly 'lofty' bag which feels toasty as soon as you enter it. There's a nice thick collar and the simple hood arrangement typifies this minimalist design. But just look at the weight of this thing - just over 1100g, making it by far the lightest bag on test. Pack-down size is great too,