Item #: 332231681

A true minimalist bivy for fast and light solo expeditions, the 18-ounce Helium Bivy is the lightest bivy we make. Credit the feathery waterproof, breathable Pertex® Shield+ fabric that doesn’t compromise on durability—the floor is 70D. This bivy’s no-nonsense clamshell design will handle seasons of adventuring to come.

NOTE: Find in Store Inventory levels are continuously changing. Please contact store to confirm availability is as shown.


  • Sleeping Pad Straps, Five Stake Loops, One Guy Line Loop, Internal Mesh Pocket
  • Delrin® Single-Pole System
  • Waterproof, Breathable, Ultra Lightweight, Fully Seam-Taped, Durable, No-See-Um Mesh, Hydroseal® Floor,


  • Average Weight: 510 g (18 oz)
  • Pertex® Shield+ 2.5L, 100% nylon, 30D ripstop upper - 100% nylon, 70D with TPU lamination floor

Shipping Info:

  • Leaves the warehouse in 1-7 business days depending on order volume.
  • Items may be returned within 60 days of the order date to an Atmosphere retail store or an Atmosphere warehouse. Items must be returned unused/unworn and electronics unopened. See Online Return Policy and Return Instructions for more information.
  • Note: Shipping restrictions may apply based on location and product size.


There Are No Customer Reviews Yet Be the first to write a review