Outdoor Research Helium Bivy, slate

• Award-winning for its ultralight prowess with our most durable lightweight Helium fabric featuring Diamond Fuse technology. This clamshell opening bivy is ideal of fast and light missions.
• bluesign approved Pertex Shield Diamond Fuse 2.5L 100% Nylon, 30D Ripstop Upper. 100% Nylon, 40D with TPU lamination floor, bluesign approved 100% Polyester Mesh
• Waterproof Breathable Ultralight Fully Seam-Taped Durable No-See-Um Mesh
• Single-Pole System Reflective Logo and Trims Two Stake Loops One Guy Line Loop High Volume Toe End Clamshell Opening, Two Internal Fly Fasteners

The Helium Bivy is our lightest, best-selling, and most awarded bivy sack. Thru-hikers and bikepackers love the Helium for its refined footprint and reduced weight and trust it for its durable, lightweight, waterproof Pertex® Diamond Fuse technology. Incredibly quick to set up and break down, the ultralight Helium Bivy is 14% lighter than its last generation and has everything the outdoor minimalist needs to be comfortable. A clamshell opening makes it easy to get in and out and resists wear and tear for future seasons of adventuring. The ideal shelter for minimalists looking to trade weight for speed, agility, and performance, the Helium Bivy is a fast-and-light essential.