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Sea to Summit Traverse Xt I Sleeping Bag

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Spring backpacking to hut-to-hut ski touring, the Sea to Summit Traverse Xt I down sleeping bag keeps you warm in a broad range of environments and a variety of activities.

  • High loft, premium 850-fill-power goose down offers superb warmth for minimal weight
  • Shell fabric is constructed of 3D NanoShell™ technology, a 20-denier ripstop fabric treated with a Durable Water Repellent and a non-woven silicone encapsulated fabric
  • Innovation shell technology manages condensation, moving moisture vapor through down and siliconized barried outward; shell repels water and protects the loft of the bag
  • Lining is a breathable, durable 20-denier polyester fabric with a soft touch
  • Full length side zipper and foot zipper allow bag to be converted from traditional sleeping bag to a duvet/down comforter
  • Relaxed mummy shape is cut with a large hood, broad shoulders and large chest for a more comfortable sleeping bag while maintaining thermal efficiency
  • Upper side of bag features a differential cut (inner layer is cut smaller than the outer layer to create consistent thickness of insulation) to help prevent cold spots
  • Reverse differential cut on lower side; inner layer is cut larger than the outer layer to allow down to loft up, filling spaces around body so warmth wraps around you
  • Oversize draft tube backing the zipper keeps the warmth in and the cold out; zipper is backed by stiff, antisnag tape for smooth operation
  • Interior zipper security pocket is great for stowing small essentials, alleviating middle-of-the-night fumbling and preserving battery performance in cold weather
  • Oversize collar drapes comfortably over neck and shoulders, sealing out drafts; dual elastic adjusters
  • Preventing cold air from seeping in, offset baffle construction allows the goose down to remain fully lofted and keeps it from shifting
  • Sea to Summit Traverse Xt I bag comes with a Ultra-Sil® compression sack, an oversize mesh storage cell and a large cotton sack
  • European Norm (EN) is an independent third-party temperature rating, allowing accurate comparisons across brands with other EN-rated bags


Item 830939


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Sea to Summit Traverse Xt I Sleeping Bag Specs
Best use
19 degrees Fahrenheit
30 degrees Fahrenheit
19 degrees Fahrenheit
-7 degrees Celsius
2 lbs. 6 oz. / 2 lbs. 10 oz.
1.0 / 1.2 kilograms
850-fill goose down
14.1 / 15.5 ounces
72 / 78 inches
59 / 61 inches
54 / 57 inches
7.5 x 14 inches
10 liter
EN lower limit (rating for men)
EN comfort (rating for women)
Temperature rating (F)
Temperature rating (C)
Weight - metric
Insulation type
Fill weight
Sleeping bag shape
Fits up to (in.)
Shoulder girth (in.)
Hip girth (in.)
Stuff sack size
Stuff sack volume

Sea to Summit Traverse Xt I Sleeping Bag

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