$149.00 to $159.00
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A feature-packed yet value-oriented synthetic bag for weekend warriors and new campers, the Sea to Summit Trailhead ThII sleeping bag is no slouch when it comes to performance.

  • Features

    • Tapered rectangular shape offers more space and comfort than a traditional mummy bag
    • Synthetic insulation continues to keep you warm even if it gets damp
    • Wave Loft construction helps retain warmth and loft
    • Full-length #5 YKK® zipper allows bag to fully open and lie flat for use as a quilt
    • Second zipper in footbox area allows ventilation for your feet
    • Oversized, antisnag zipper draft tubes keep out the chill
    • 30-denier nylon shell fabric is treated with a durable water repellent (DWR) finish that sheds moisture and helps block wind
    • Lightweight 20-denier lining fabric is attached to the shell to prevent tangles
    • Comes with a stuff sack
    • NOTE: This bag is not designed to zip together with another bag


    Many sleeping bags are rated for temperature by an independent testing protocol. With both European Norm (EN) 13537 and International Organization for Standardization (ISO) 23537 testing, each bag gets a Comfort (or T-Comfort) rating and Lower Limit (or T-Limit) rating. The Comfort/T-Comfort rating is the lowest temperature at which the bag will keep the average "cold sleeper" comfortable, and the Lower Limit/T-Limit rating is the lowest temperature at which the bag will keep the average "warm sleeper" comfortable. Ratings are based on a person wearing one long underwear layer and a hat, sleeping on a single 1 in. thick insulating pad. Many brands use the Comfort rating for women's bags and the Lower rating for men's and unisex bags. Everyone's body and sleep comfort differ, so EN and ISO ratings are simply a guideline to help you compare products.
    View all Sea to Summit Men's Sleeping Bags
  • Technical Specs

    Best Use


    Tested Lower Limit

    30 degrees (F) - EN

    Tested Comfort

    40 degrees (F) - EN

    Temperature Rating (F)

    30 degrees (F)

    Temperature Rating (C)

    -1 degrees (C)


    Long: 2 lbs. 10 oz.

    Regular: 2 lbs. 5 oz.


    30-denier nylon

    Zipper Location


    Insulation Type



    Synthetic fibers


    20-denier nylon

    Sleeping Bag Shape


    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


    Stuff Sack Volume


    Compressed Volume




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