Sierra Designs BTU -5

1 review
5-star:   1
4-star:   0
3-star:   0
2-star:   0
1-star:   0


Short Regular Long
Weight 3 lb 9 oz / 1600 g 3 lb 15 oz / 1800 g 4 lb 3 oz / 1900 g
Fill Weight 1 lb 15 oz / 880 g 2 lb 1 oz / 940 g 2 lb 3 oz / 990 g
Temperature Rating - 5° F / - 21° C - 5° F / - 21° C - 5° F / - 21° C
Fill 800 Fill-Power Down 800 Fill-Power Down 800 Fill-Power Down
Shape Mummy Mummy Mummy
Max User Height 5 ft 6 in / 170 cm 6 ft 0 in / 180 cm 6 ft 6 in / 200 cm
Shoulder Girth 60 in / 150 cm 64 in / 160 cm 66 in / 170 cm
Hip Girth 56 in / 140 cm 60 in / 150 cm 62 in / 160 cm
Foot Girth 41 in / 100 cm 43 in / 110 cm 43 in / 110 cm



Great bag! I am 6"1' and I fit perfectly in this bag,…

Rating: rated 5 of 5 stars
Price Paid: $190

Great bag! I am 6"1' and I fit perfectly in this bag, there is no wasted space, but it is still comfortable.

I used this bag on a -6 degree night here in Colorado on top of a Big Agnes Dual Core pad, and I was plenty warm all night, and I was open air, straight on the snow. I slept in wool long johns and socks, with a wool balaclava and was toasty warm all night long. I woke up and there was ice caked on the outside of the shell, but I was warm and dry on the inside. It dried after probably a half an hour.

There is some nice loft to the bag, and the flex baffles actually keep the down centered around your core. Awesome bag, definitely recommended. 

Manufacturer's Description

Visit Sierra Designs's BTU -5 page.

Retailers' Descriptions

Here's what other sites are saying:

CLOSEOUTS . The 800 fill power DriDownand#174; insulation in Sierra Designsand#39; -5and#176;F BTU sleeping bag retains more loft and warmth than untreated down when wet. The DriZoneand#174; waterproof protection allows moisture to escape from inside the bag for ventilated and comfortable sleep. Available Colors: BLUE.

- Sierra Trading Post

Cold nights in the mountains have never been so comfortable. The Sierra Designs BTU -5 sleeping bag is stuffed with 800-fill hydrophobic DriDown(TM) and has a waterproof, breathable shell. Down is widely considered the best insulation available, but when wet it quickly loses loft and the ability to keep you warm; DriDown is treated to resist moisture. Proprietary process treats each individual goose down plume with a molecular-level polymer so the down stays dry longer, lofts better and dries faster than untreated down. DriDown insulation stays dry 10 times longer, retains 170% more loft when exposed to moisture and dries 33% faster than untreated down. DriZone(TM) waterproof, breathable fabric allows moisture to escape while keeping rain out; 30-denier lining fabric is comfortable next to skin. Baffle construction keeps down from migrating, eliminating cold spots. 40 in. zipper keeps weight down and won't let out all the warmth when you're getting in and out of the sleeping bag; locking slider is backed by wide, antisnag binding tape. Snag-free zipper tracks prevent the dreaded stuck zipper by creating a barrier between the lining and the zipper track. Fully insulated draft tube backing the zipper keeps body heat in and cold air out. Ergonomic, nonrestrictive hood cradles your head in warmth; use the drawcords to cinch the hood snug around your head. Includes an internal media pocket for your cell phone or alarm clock. Sierra Designs BTU -5 comes with stuff sack and storage bag.


Free Shipping. Sierra Designs BTU -5 Sleeping Bag DECENT FEATURES of the Sierra Designs Men's BTU -5 Degree Sleeping Bag Side-wall, box baffle construction Oversized, ergonomically shaped footbox Microfleece lined foot box Snag-free zipper tracks Internal media pocket Corded hood baffle Draw cord at collar Expedition Jacket Hood Drizone waterproof-breathable shell Anti-microbial liner treatment reduces odor over long uses Zipper draft tube Tuck Stitch construction Includes storage and compression stuff sacks Easy access, ventable, 40in. zipper The SPECS Temperature Rating: -5deg F / -21deg C Zipper Side: Left Stuff Size: 9in. x 19in. Material: Fill: 800 Fill-Power Goose Down Shell: 40D Drizone Nylon Ripstop Liner: 30D Polyester The SPECS for Short Trail Weight: 3 lbs 9 oz Shoulder Girth: 60in. Hip Girth: 56in. Footbox Girth: 41in. Fits Up To: 5'6in. Fill Weight: 31 oz The SPECS for Regular Trail Weight: 3 lbs 15 oz Shoulder Girth: 64in. Hip Girth: 60in. Footbox Girth: 43in. Fits Up To: 6' Fill Weight: 33 oz The SPECS for Long Trail Weight: 4 lbs 3 oz Shoulder Girth: 66in. Hip Girth: 62in. Footbox Girth: 43in. Fits Up To: 6'6in. Fill Weight: 35 oz

- Moosejaw

With 800-Fill goose down insulation and a waterproof shell, this cold-weather bag is warm, weatherproof and very compressible. Perfect for your next fridgid expedition.

- SunnySports

Sierra Designs BTU -5


The Sierra Designs BTU -5 is not available from the stores we monitor. It was last seen May 28, 2014 at Sierra Trading Post.

If you're looking for a new cold weather down sleeping bag, check out the best reviewed current models.