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by MSR
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SKU 53041
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When weight and space really count, the AC Bivy 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 it easy to get into and use while sitting up.

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


  • Capacity: 1
  • Minimum Weight: 1 lb / 450 g
  • Packaged Weight: 1 lbs 2 oz / 510 g
  • Packed Size: 8 x 4 in / 20 x 10 cm
  • Freestanding: no
  • Fly Fabric: 40D x 238T Ripestop Nylon 6 2 layer/waterproof breathable
  • Canopy Fabric: 40D x 238T ripstop nylon 6 10000mm Durashield polyurethane & DWR coated


Prop 65 A (General): This product contains chemicals known to the State of California to cause cancer, and birth defects or other reproductive harm.