Sea to Summit Traverse TvII 25 Sleeping Bag

$219.00to $229.00
Color: Forest/Pine
please select a Size
Choose a shipping method

Hike through snow to sleep in an alpine hut or camp out after a summer storm with confidence. The Sea to Summit Traverse TvII 25 sleeping bag won't let you down.

  • Features

    • Tapered rectangular shape offers more space and comfort than a traditional mummy bag
    • WaveLoft™ construction and high-quality THERMOLITE® insulation are lofty and durable for lasting warmth
    • Anatomically shaped footbox offers extra space
    • Oversize antisnag zip draft tubes and neck draft tube
    • Free-Flow half-zip right side, full-length zip left side and separate foot zips offer freedom of movement and increased ventilation
    • 30-denier nylon shell treated with durable water repellent (DWR) and 20-denier nylon lining are lightweight and compressible fabrics
    • Lining fabrics attached to shell prevents tangles
    • Includes strong 70-denier compression sack
    • This bag is designed to zip with another (second sleeping bag sold separately)


    Many sleeping bags are rated for temperature by an independent testing protocol. REI and the broader industry now use the International Organization for Standardization (ISO) 23537 protocol, which improves on the older European Norm (EN) 13537 standard; you may still see older items in our assortment that were only EN tested. With either protocol, each bag gets a Comfort (or T-Comfort) rating and Lower Limit (or T-Limit) rating. The Comfort rating is the lowest temperature at which the bag will keep the average "cold sleeper" comfortable, and the Lower 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 pair of socks, sleeping on an insulated surface with a minimum R-value of 5.38. Many brands use the Comfort rating for women's bags and the Lower Limit rating for men's and unisex bags. Everyone's body and sleep comfort differ, and conditions of use (posture, clothing, sleeping pad R-value, wind, humidity, etc.) affect total insulation, so EN and ISO ratings are intended as a guideline to help you compare products, rather than a guarantee of warmth.
    View all Sea to Summit Backpacking Sleeping Bags
  • Technical Specs

    Best Use


    Tested Lower Limit

    25 degrees (F) - EN

    Tested Comfort

    35 degrees (F) - EN

    Temperature Rating (F)

    25 degrees (F)

    Temperature Rating (C)

    -4 degrees (C)


    Regular: 2 lbs. 8 oz.

    Long: 2 lbs. 13 oz.


    30-denier nylon

    Zipper Location


    Insulation Type



    THERMOLITE synthetic fibers


    20-denier nylon

    Sleeping Bag Shape


    Fits Up To (in.)

    Regular: 72 inches

    Long: 76 inches

    Shoulder Girth (in.)

    Regular: 61 inches

    Long: 65 inches

    Hip Girth (in.)

    Regular: 57 inches

    Long: 61 inches

    Stuff Sack Size


    Stuff Sack Volume


    Compressed Volume




  • Reviews
    9 reviews with an average rating of 3.7 out of 5 stars

    Loading Reviews...
  • Questions & Answers

    Loading Questions...