Ascent Bivy

The Cairn Alpine Ascent Bivy is your essential minimalist shelter when every gram counts. Designed for ultralight alpine climbing, emergency shelter, or minimalist bikepacking, this bivy delivers dependable 4-season performance. Its top features a 3-layer Pertex Shield Air fabric, offering excellent waterproofing (rated to 20,000mm) and high breathability (30,000 MVTR) to effectively manage condensation. The durable 70D nylon floor boasts a robust 4,000mm PU coating to keep you dry from the ground up. A single DAC Featherlite pole creates just enough head space for comfort, complemented by fully taped seams and a U-shaped zipper with a mesh bug screen. Weighing a mere 540 grams and packing down to 30x10 cm, this bivy is always ready for your next fast-and-light adventure.

Technical

Weight	540 g
Waterproof Rating mm	20,000
Breathability Mvtr	30,000
Packed Size cm	30x10
Pole Material	DAC Featherlite Aluminum