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With a tapered rectangular shape that offers more room than a mummy bag, the Sea to Summit Trek TkII sleeping bag keeps you warm via water-resistant, RDS-certified 650-fill-power down.

  • Features

    • Water-repellent, 650-fill-power Ultra-Dry Down™ retains 60% more loft and absorbs 30% less moisture than untreated down; down is also PFC-free and RDS-certified
    • Responsible Down Standard (RDS) ensures the down does not come from animals that have been subject to any unnecessary harm, such as force-feeding or live-plucking
    • Tapered rectangular shape offers more space than a traditional mummy bag while maintaining thermal efficiency
    • Nylon shell fabric is treated with a durable water repellent (DWR) finish that sheds moisture and helps block wind
    • Vertical chest baffles prevent down migration and 3D sidewall baffle maximizes loft right to the edge of the bag to prevent cold spots
    • 2-way #5 YKK® side and foot zippers let you ventilate as needed; oversized zip draft tube keeps out the drafts, while antisnag materials make for smooth zipping
    • 3D hood draws in tight to keep you cozy; neck collar draft tube seals in warmth
    • 20-denier lining fabric is lightweight and soft on your skin
    • Internal security pocket keeps nighttime essentials close at hand
    • Comes with an Ultra-Sil™ compression sack and a nylon storage sack
    • This bag is designed to zip together with another to create a double bag

    Imported.

    View all Sea to Summit Men's Sleeping Bags
  • Technical Specs

    Best Use

    Backpacking

    Tested Lower Limit

    18 degrees (F) - EN

    Tested Comfort

    30 degrees (F) - EN

    Temperature Rating (F)

    18 degrees (F)

    Temperature Rating (C)

    -7.8 degrees (C)

    Weight

    Long: 2 lbs. 6 oz.

    Regular: 2 lbs. 2 oz.

    Shell

    30-denier nylon

    Zipper Location

    Left

    Insulation Type

    Down

    Water-Resistant Down

    Yes

    Fill

    650-fill-power Ultra-Dry down

    Fill Weight

    Long: 1 lb. 4 oz.

    Regular: 1 lb. 2 oz.

    Lining

    20-denier nylon

    Sleeping Bag Shape

    Semirectangular

    Fits Up To (in.)

    Long: 76 inches

    Regular: 72 inches

    Shoulder Girth (in.)

    Long: 64 inches

    Regular: 60 inches

    Hip Girth (in.)

    Long: 62 inches

    Regular: 57 inches

    Stuff Sack Size

    Unavailable

    Stuff Sack Volume

    Long: 14 liters

    Regular: 10 liters

    Compressed Volume

    Long: 7.3 liters

    Regular: 6.1 liters

    Gender

    Unisex

    Sustainability

    Down certified to the Responsible Down Standard (RDS)

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