Shipping Info:


Item #: 331997528

All-condition bivy shelter for minimalist travel. When weight and space really count, the MSR 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 the 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


  • Dimensions: 88" L x 36" W (head) 23" W (foot)
  • Minimum Weight 1 lb (450 g)
  • Packed Weight 1 lb 2 oz (510 g)
  • Packed Size 8 x 4" (20 x 10 cm)
  • Rainfly Fabric 40D ripstop Nylon 2 layer/waterproof breathable
  • Floor Fabric 40D ripstop nylon 10,000mm Durashield polyurethane & DWR