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  • High-loft 750-fill-power down offers superb warmth with minimal weight; Ultra-Dry Down™ water-repellent treatment protects down from moisture
  • Ultra-Dry Down is a water-repellent polymer treatment applied to the down; Ultra-Dry Down retains 60% more loft and absorbs 30% less moisture than untreated down
  • With a European Norm (EN) lower-limit rating of 50°F, the Sea to Summit Traveller Tr I will keep you comfortable on summertime backpacking adventures
  • Traveller Tr I can be zipped together with another Traveller Tr I when you're not alone; Large size will comfortably accommodate 2 people when unzipped and used as a blanket
  • Has a lightly tapered shape with collar and foot drawcords that can be cinched down to seal in heat and a create a mummy-shaped bag
  • Lightweight ripstop nylon shell can be reversed so either the gray or teal color is on the outside
  • Sea to Summit Traveller Tr I Sleeping Bag includes a lightweight Ultra-Sil compression stuff sack and a mesh storage bag


Many sleeping bags are rated for temperature by an independent testing protocol, the European Norm (EN) 13537. Each bag gets two ratings: a Comfort rating and Lower Limit rating. The Comfort rating is the lowest temperature at which the bag will keep the average woman (or "cold sleeper") comfortable, and the Lower Limit rating is the lowest temperature at which the bag will keep an average man (or "warm sleeper") comfortable. Everyone's body and sleep comfort is different, so EN Ratings are merely a guideline to help you compare products.

View all Sea to Summit Men's Sleeping Bags

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Best Use Backpacking, Travel
EN Lower Limit 50 degrees Fahrenheit
EN Comfort 57 degrees Fahrenheit
Temperature Rating (F) 50 degrees Fahrenheit
Temperature Rating (C) 10 degrees Celsius
16.8 ounces
13.7 ounces
Ultralight Yes
Shell Ripstop nylon
Zipper Location Left/Right
Insulation Type Down
Water-Resistant Down Yes
Fill 750-fill duck down
Fill Weight
8.8 ounces
7.1 ounces
Lining Nylon
Sleeping Bag Shape Mummy
Fits Up To (in.)
79 inches
72 inches
Shoulder Girth (in.) Unavailable inches
Hip Girth (in.)
58 inches
53 inches
Stuff Sack Size
5 x 10 inches
4 x 9 inches
Stuff Sack Volume
3.3 liters
2.5 liters
Compressed Volume
1.89 liters
1.55 liters
Gender Unisex