US
Western Mountaineering

Western Mountaineering TerraLite 25 Degree Sleeping Bag

  • 6ft 6in length, left zip
  • 65 / 68 / 42 inch girth at shoulder, hip and foot
  • 1 lb 15 oz total weight, 19 oz down fill
  • 12D nylon ripstop shell, 15D nylon taffeta lining
  • Goose down fill, semi-rectangular cut
  • 7 x 13 inch stuff sack size
  • Two zippers, mates with the brand's mummy bags

Updated 20 days ago · Based on the Amazon listing and published specifications, not hands-on testing.

Our verdict

Side sleepers get a wide, light down bag with room to shift and a zipper layout that opens it into a quilt. The temperature rating appears only in the title, so check it before relying on the bag in cold conditions.

As an Amazon Associate I earn from qualifying purchases. ProductDome earns a commission when you buy through links on this page.

ASIN: B015L8CZ9YCategory: Sleeping Bags

Overview

Twin zippers run along the TerraLite, so the bag can pair with Western Mountaineering mummy bags or open fully around the foot into a comforter. Goose down fills a wide semi-rectangular body cut for side sleeping, inside a ripstop nylon shell.

Room through the middle is the reason to choose the TerraLite, giving side sleepers space to bend their knees and roll without fighting the bag. Light fabrics and down fill pack small, but the specs give no temperature figure and mention no water resistant treatment.

Who it's for

Backpackers and mountaineers who sleep on their side and want width without a bulky bag are the audience. Sleepers who prefer a snug mummy fit, or who need the length confirmed for a tall frame, should check the sizing details first.

Pros and cons

Pros
  • Wide girth suits side sleepers
  • Goose down fill
  • Light ripstop nylon shell
  • Second zipper opens the foot
Cons
  • Temperature rating missing from the specs
  • Height recommendation and length disagree
  • Down loses loft when wet
  • Left zip only in this size

Performance notes

Warmth comes from how much loft the goose down holds and how little air moves inside the bag. The wide girth adds comfort but also more space to heat, so an insulated pad and a closed zipper matter on cold nights.

Specifications

BrandWestern Mountaineering
Dimensions & fit
Maximum Height Recommendation72 inches
Size6 Feet
Item weight1 pound
Fill weight1.19 pounds
Item Dimensions L x W78 × 65 inches
Stuff sack size7 x 13 inches
Construction & materials
Fill Material TypeDown
MaterialGoose Down
ColorNavy Blue
Other details
Occupancy1 Person
ShapeSemi-Rectangular
Closure TypeZipper
Inside girth65 in shoulder / 68 in hip / 42 in foot

Frequently asked questions

What sleeper height does the Western Mountaineering TerraLite 6ft 6in fit?

The specs give a 6 feet maximum height recommendation, while the description names a 6ft 6in length and the dimensions read 78 inches long. Taller sleepers should confirm fit with the seller.

Is the TerraLite a mummy bag?

No. It is a semi-rectangular bag with a wide middle for side sleeping, and with both zippers open it spreads out like a comforter.

What is the temperature rating of the Western Mountaineering TerraLite?

The rating appears only in the product title, not in the specs or description, and no rating standard is named.