MSR AC-Bivy Sack

Price: $419.00 Javascript is required to display updated price



When weight and space really count, the AC Bivy shelter is the best and most efficient way to get the all-condition protection you need. Maximum waterproof-breathable fabric coverage delivers the best possible breathability, while an extra-tough floor with our finest, 10,000mm DuraShield coating lets you rest confidently through anything. A zippered shoulder entry with mesh allows excellent bug-free ventilation and makes the bivy shelter easy to get into and use while sitting up.

Ultralight: Ideal shelter for minimalists, bivy tent weighs only 1 lb (450 g).
Waterproof: Highly breathable two-layer top with 10,000mm DuraShield -coated floor.
All-Condition Protection: Zippered mesh closure allows bivy tent maximum, bug-free ventilation while maintaining bug protection.


Color Mustard/Gray
Capacity 1
Minimum Weight 1 lb / 450 g
Packed Weight 1 lbs 2 oz / 510 g
Canopy Fabric
Mesh Type 20D nylon micromesh
Packed Size 8 x 4 in / 20 x 10 cm
Freestanding no
Rainfly Fabric 40D ripstop Nylon 2 layer/waterproof breathable
Floor Fabric 40D ripstop nylon 10,000mm Durashield polyurethane & DWR