Outdoor Research Interstellar Bivy

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Built from the recommendations, feedback and favorites of OR employees, the fully seam-taped, 4-season Outdoor Research Interstellar bivy represents years of idealizing the perfect night outdoors.

  • Features

    • Fully seam-taped, 3-layer AscentShell™ technology delivers waterproof, breathable weather protection
    • Single pole can be used to add head space or can be left at the trailhead to save weight
    • Updated side entry makes it easy and fast to get in and out of your shelter
    • Innovative zipper design and built-in sombrero allow you to sit up and perform tasks like cooking and packing without fully leaving the shelter
    • 20-denier ripstop nylon upper fabric with 40-denier ripstop base and thermoplastic polyurethane floor offers light weight where you want it and durability where you need it
    • Large opening; 1 guyline loop; 2 stake loops


    View all Outdoor Research Bivy Sacks
  • Technical Specs

    Best Use



    3 - 4-season

    Sleeping Capacity



    1 lb. 3.9 oz.

    Packed Size


    Bivy Length

    82 inches

    Shoulder Width

    26 inches



  • Reviews
    32 reviews with an average rating of 4.3 out of 5 stars

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