Sea to Summit Traverse XtI 19ºF Ultra-Dry Down Sleeping Bag

Sea to Summit Traverse XtI 19ºF Ultra-Dry Down Sleeping Bag

The Traverse series is a versatile bag designed for a broad range of activities in a variety of environments. It's filled with 850+ Loft European Goose ULTRA-DRY Down™ and protected by Sea to Summit's® patent pending 3D NanoShell™.

Designed with a relaxed mummy shape, the Traverse series offers comfort in the widest range of temperatures. With the ability to be opened out into a full duvet when sleeping in huts and zippered up for winter camping in sub zero conditions, the Traverse series can be used all year round. The oversized neck-collar and hood-seal keep drafts out, minimizing heat loss around the face. The oversized zipper draft tube is fitted with the lightest and stiffest anti-snag material, for smooth operation. A security pocket located inside the bag is easily accessible, ideal for stowing electronics to preserve battery performance in extreme cold. Using a side block baffle construction to maintain a 60 / 40 fill ratio, more down is located in the top of the bag for maximum insulation. The soft touch lining fabric is down proof by construction and highly breathable offering a comfortable sleep.

The Traverse relaxed mummy shape is cut with a larger hood, broader shoulders and large chest to provide a more comfortable sleeping bag while maintaining thermally efficiency. The addition of a full length side and foot zip allow for conversion from a traditional winter mummy shaped bag to a duvet offering the greatest versatility in a cold weather sleeping bag.
  • Versatile relaxed mummy convertible sleeping bag
  • Durable water-repellency shell
  • 3D NanoShell construction
  • Differential cut shell with 3D side walls
  • Offset baffles
  • 60 / 40 fill ratio
  • Side block baffle
  • Anatomically tapered box foot
  • Zip draft tube with anti-snag, neck draft tube with dual elastic adjustment
  • Cushioned internal hood drawcord with dual adjustment
  • Two-way YKK #5 zips with separate foot zip
  • Medium sized internal zip pocket
  • Lightweight Ultra-Sil® compression bag
  • Mesh storage cell and laundry bag
  • Right-side zip
  • Fits to 6' 0"
  • Fill weight: 14 oz. (400g.)
  • Season rating: Spring, autumn / winter-lite
  • Compression bag: Small - 10 L to 3.3 L
  • Suggested use: Lightweight trekking, hiking, anow camping, aki touring

EN Rating:

  • Comfort: 30ºF / -1ºC
  • Lower limit: 19ºF / -7ºC
  • Extreme: -13ºF / -25ºC

More »
Following a successful 1984 climb up the north face of Mount Everest, one of the summiteers, Tim Macartney-Snape decided to return six years later so that he could do what no one else had done - climb it starting from sea level, that is from "sea to summit".

For this trip, in 1990, Tim swam in India's Bay of Bengal and then set off on foot across the Gangetic plain toward the distant Himalayan foothills and four months later, set foot once again on the highest point on earth. Tim's solo ascent of Mt. Everest was named the "Sea to Summit" expedition.

Back in Australia, he joined forces with friend Roland Tyson to build a business that could make use of their knowledge of the outdoors to create truly ingenious, well-made but affordable outdoor equipment. They named their company Sea to Summit® after Tim's expedition and the business prospered. Today the Sea to Summit brand continues to provide innovative gear and serves a growing band of outdoor enthusiasts all over the world.
Description Average weight Fill Comfort rating Price  


More Info

Product Details

Sea to Summit Traverse XtI 19ºF Ultra-Dry Down Sleeping Bag

SKU #:
UPC #:
Average weight:
2 lbs. 6 oz. (1070g.)
Ultra-Dry Down 850+ loft 90% down cluster premium European goose down
Comfort rating:
19ºF / -7ºC
Fits up to:
6' 0"
Hip girth:
20D Polyester
3D NanoShell: 20D Polyester w/ Nano DWR
Shoulder girth:
Stuff sack size:
10 Liters - 3.3 Liters
2 lbs. 6 oz. (1070g.) Ultra-Dry Down 850+ loft 90% down cluster premium European goose down 19ºF / -7ºC $549.00