Emergency bivy

Purpose

Provide a wind- and rain-shedding cocoon for an unplanned night out.

Used in kits

• Ultralight Overnight Backpacking Kit

  Hiking & Backpacking

• Search and Rescue Field Team Kit

  Professional & Field Ops

Alternatives

• Emergency blanket— Lighter and cheaper; the wind can open it.
• Bivy bag (breathable)— A real sleep system component; heavier and pricier.

Maintenance notes

• Repack carefully; the lightest versions tear.

Buying considerations

• A reusable orange bivy doubles as a signal.
• Breathable models cut the clammy condensation of foil sacks.