Advanced Bivy™

Style# 40141OR

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The spacious Advanced Bivy can be used in place of a single-person tent. The largest of our bivy sacks, the Advanced Bivy provides the most space for thicker sleeping pads and loftier bags. The patented dual-pole system can be used to increase ventilation and interior space, or left behind when weight and pack space are critical. GORE-TEX® Respiration Positive™ fabric allows warm, moist air to escape but blocks outside weather, minimizing condensation while providing supreme protection from the elements. A zippered vent at the base improves airflow on humid nights.


Mojo Blue




  • Waterproof
  • Highly-Breathable GORE-TEX® Fabric Body
  • Durable Hydroseal® Coated Floor
  • Anti-Fungal Coating on Floor
  • Fully Taped Seams
  • Overhead and Circumferential Dual Delrin Pole System
  • Pole System Allows Multiple Configurations for Opening
  • Removable No-See-Um Netting Covers Opening
  • Sleeping Pad Straps
  • Sized to Fit Thicker Mats
  • High-Volume Toe-End with Zippered Vent
  • Toe-End Zipper with Wide Storm Flap
  • Five Stake Loops
  • Three Guy Line Loops
  • Small Internal Mesh Pocket


Fabric: GORE-TEX® Respiration Positive™ 3L, 100% nylon, 30D ripstop upper // 2L, 100% nylon, plain weave taffeta floor

Avg. Weight (oz./g): 39.0oz / 1106g (W/ Pole)

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