Outdoor Research Alpine AscentShell Bivy

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Outdoor Research Alpine AscentShell Bivy -- Solo adventuring just got a whole lot more comfortable and convenient. Building on the reputation set by the cult-classic Alpine Bivy, this new version leverages AscentShell™ x Pertex® technology for a drastically improved breathability rating which leads to less condensation and a more comfortable sleep. Its step-in opening allows you step directly out of your boots and into your bed easier and without the fuss of shimmying. Extra large head space makes room for gear, and a no-see-um mesh comes in handy when the bugs are out for blood. This bivy is ideal for alpine pursuits, extreme weather, or anytime you want to skip the weight and space of a tent.
Materialsbluesign® approved AscentShell™ x Pertex® Shield Air Diamond Fuse 3L 100% Nylon Upper
100% Nylon 40D with TPU lamination Floor
bluesign® approved 100% Polyester Mesh
WeightWith Pole: 18.6 oz | 528 g
Without Pole: 16.8 oz | 479 g
  • Waterproof
  • Breathable
  • Ultralight
  • Fully Seam-Taped
  • Durable
  • No-See-Um Mesh
  • Single-Pole System
  • Two Stake Loops
  • One Guy Line Loop
  • High Volume Toe End
  • Extra Head Room to Store Gear
  • Large Side Opening
  • Fly Fastener Exposes Mesh Screen
  • Extra Large Mesh Screen for Star-gazing
Outdoor Research