Mountain Equipment Company

Outdoor Research Molecule Bivy Sack


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A nano-sized shelter for fast and light adventures, the Molecule Bivy is made of lightweight waterproof-breathable fabric, uses a classic clamshell opening, has an overlapping zipper for easy breathing, and a durable, anti-fungal coated floor. A no-see-um net keep the bugs out and lets you keep an eye on conditions.

  • Upper fabric is 2.5-layer polyurethane coated nylon
  • Floor is 70-denier nylon with a waterproof laminate and an anti-fungal coating to prevent mildew
  • Fully seam taped are completely waterproof-breathable
  • 5 stake loops and one guy-line loop
  • Vented footbox
  • No-see-um netting face panel
  • Small internal mesh pocket

Tech specs

Weight628g (Hops Regular)
Ideal for
  • Backpacking
  • Winter and expedition camping
Canopy meshNylon no-see-um mesh
Floor fabric70-denier nylon
Floor coatingPolyurethane
Fly fabricWaterproof-breathable fabric
Fly coatingPolyurethane
Interior peak height0.46m
Made inChina

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