Western Mountaineering Terralite -4C Down Sleeping Bag - Unisex 5036-139

Western Mountaineering Terralite -4C Down Sleeping Bag - Unisex


Rocksolid Guarantee

Shop with confidence. If it’s not working out, you can return it (consumables, undergarments and swimwear excluded).

Really. If it's not up to snuff after you use it (a couple times) you can still bring it back.

It lasts longer than 30 days, but not forever. We'll be fair about it. We're all members here.

Price match guarantee

Found a better deal in Canada? Up to 30 days after purchase – we’ll match it.

If you see a lower price for this exact item advertised online, in print or in a store, give us a call at 1 (888) 847-0770.

If it’s identical, brand-new, in stock, and sold and shipped by a Canadian-based retailer, we’ll match that price.

See available Sleeping bags


Show Description

Super-light and compressible fabrics and premium down fill add up to a performance bag for pushing seasons. The TerraLite is a wide bag that's nice for those who like to sleep on their side. Width through the middle lets you curl up inside. You can also open up both zippers to make a fairly wide comforter for airy comfort on warmer nights.

  • Shell is made of incredibly light compressible, sub 20-denier ripstop nylon.
  • Lining is nylon taffeta.
  • Continuous baffle construction allows you to adjust the fill according to your needs.
  • Down filled draft tube eliminates cold spots at the zipper.
  • Insulated hood has an adjustable draft closure.
  • 2 zippers allow zip together with other Western Mountaineering mummy bags. Second zipper opens the bag up completely around the foot.

Tech specs

Show Tech specs
Ideal for Backpacking
  • Small fits to 5' 6" (168 cm)
  • Regular fits to 6' 0" (183 cm)
  • Long fits to 6' 6" (198 cm)

The number of average sized people that the product can comfortably sleep.

Seasons 3-season (-2°C to -12°C)
Temperature -4°C
Shape Barrel
Insulation 850+ fill-power goose down
Down weight

The amount of down used to fill the product (measured in grams and given for size medium bags).

Construction Baffle
Face fabric 15-denier nylon
Lining/backer 15-denier nylon
Packed size 18 x 33cm

The thickness or puffiness of a bag – a key factor in determing a bag's warmth.

Shoulder girth 165cm
Hip girth 172cm
Foot girth 106cm

An insulated collar that covers yours neck and shoulders to reduce heat loss.

Additional feature(s)
  • Draft tube behind zipper
  • Stuff sack included
  • Ultralight
Made in USA