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Big Agnes
Anvil Horn Sleeping Bag: 15F Down

3.6666666666666665 out of 5 stars
3 Reviews
$223.96 - $329.95
Up to 20% off



Why We Like The Anvil Horn Sleeping Bag

The Anvil Horn is Big Agnes’ sleeping bag that balances all of our comfort, weight, and warmth needs. It’s built with the Flex Pad Sleeve that eliminates the need for insulation down the back, saving weight by using your sleeping pad to keep you warm. DownTek traps in heat on the top and sides, using high-loft down that effectively insulates you against the cold. DownTek is made of down that’s treated so it resists collapse when exposed to moisture, but the shell of the Anvil Horn has a DWR finish to keep it from needing to. The bag is spacious, yet streamlined to reduce cold spots while leaving room for motion in the Free Range hood and footbox.


  • Sleeping bag for camping and backpacking
  • DownTek has a high warmth to weight ratio
  • Treated down resists compressing when wet
  • Insotect Flow construction minimizes cold spots
  • Flex Pad Sleeve connects your bag to your pad
  • Free Range Hood and Footbox let you move your extremities
  • Item #BAG00EV
[face fabric] polyester ripstop, DWR, [lining] polyester taffeta
650-fill DownTek
[regular] 65in
Max User Height
[regular] 5ft 10in, [long, wide long] 6ft 6in
Shoulder Circumference
[regular] 69in, [long] 72in, [wide long] 80in
Hip Circumference
[regular] 60in, [long] 63in, [wide long] 71in
Foot Circumference
[regular] 49in, [long] 52in, [wide long] 60in
Bag Length
[regular] 5ft 10in, [long, wide long] 6ft 6in
Pad Retainer
Flex Pad sleeve, [regular] 20 - 25 x 72in, [long] 20 - 25 x 78in, [wide-long] 25 - 30 x 78in
Fill Weight
[regular] 1lb 1oz, [long] 1lb 4oz, [wide long] 1lb 8oz
Storage Sack
Stuff Sack
polyester ripstop
Stuff Size
8 x 17.5in
Claimed Weight
[regular] 2lb 8oz, [long] 2lb 12oz, [wide long] 3lb 1oz
Manufacturer Warranty
backpacking, weekend camping

Overall Rating

3.5 based on 3 ratings

Review Summary

1 Stars - 0 reviews
2 Stars - 1 reviews
3 Stars - 0 reviews
4 Stars - 1 reviews
5 Stars - 1 reviews

Fits Slightly Large

Screen reader users: the following list provides a visual scale to illustrate the product fit. Please refer to the heading above for the fit type in text.
Runs smallTrue to sizeRuns large

What do you think about this product?


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2 out of 5 stars

February 18, 2024


I returned this product before using it

Extremely disappointing. The bag itself is fine, but not once is it mentioned that there is no down insulation whatsoever on the backside. I understand it is meant to be used with a pad underneath, but hips still touch the ground, etc. doesn’t make any sense.

Austin B
4 out of 5 stars

May 6, 2023


I've used it several times
Size Bought:
Long xwide
6' 7"

Model: long x-wide Stats: 6'7" tall, 60" shoulders, side sleeper. I have enough room to roll around and stretch out. Fits my 30x78 4.3 r rated pad. I'm naturally a warm sleeper. I slept fine in 30° weather. The zipper does catch the material, which is a pain alot of times. Now if only I could find a comfortable pillow!

Michael G
5 out of 5 stars

September 27, 2020

Best sleep I've had on the trail

I've used it once or twice and have initial impressions
Size Bought:
Wide Long
6' 1"

This sleeping bag is everything they describe. I'm 6'1" 200lb, got the wide-long and it is SO roomy yet still so warm. I just used it on my hike in the Uinta mountains, where it got down to the 30s, and I was so comfy. I'm a mover when I sleep but with the Big Agnes sleep system I stayed on top of my pad all night long. Getting good sleep on the trail has always been an elusive thing, but not any more!