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MSR E-Bivy

The diminutive, ultralight and weather-resistant E-Bivy sack can be tossed into a pack lid on any trip, providing essential protection for an unplanned night in the hills, or added warmth and comfort when used under tarps or on open bivies. Its silicone-coated fabric top blocks wind, dew, spindrift and precipitation, making it the perfect emergency shelter.


  • Ultralight: Ultra-packable & ultralight emergency shelter is easy to take with you
  • Reliable: Durable bivy offers warmth & weather-resistance when you need it
  • Protection: Silicone coated fabric top; Xtreme Shield™ waterproof floor
  • Includes: Bivy, stuff sack


  • Weight: 7oz
  • Size: 7"x4"
  • Floor Fabric: 15D ripstop nylon 1200mm Xtreme Shield™ polyurethane & DWR