Bivy sack
Overview
A bivy sack is a compact, single-person shelter that encloses a sleeping bag and sometimes a pad, providing weather and wind resistance with minimal interior space.
Key points
- Often used by minimalist hikers or in situations where space and weight are priorities.
- Can be water-resistant or waterproof and may include mesh panels for ventilation.
- Interior comfort, condensation tendency, and entry style vary by design.
Details
Bivy sacks originated in climbing and mountaineering contexts and have been adapted for backpacking and long-distance hiking. They typically consist of a protective shell that surrounds a sleeping bag, sometimes with a small hooded area over the head. Some designs are simple, while others incorporate small poles or stiffeners to create limited headroom. Bivy sacks are valued for their small packed size and flexibility in tight or uneven sites. At the same time, they offer less interior living space than tents or tarps, and moisture management and ventilation characteristics differ across models.
Related topics
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