Quick Answer
To keep your gear dry inside a bivy sack, store it in sealed waterproof bags, use a space blanket as a dry layer, and keep your gear away from any openings to prevent water entry.
Choosing Waterproof Bags
Select bags made from waterproof materials like nylon or PVC with sealed zippers and airtight designs. Store your gear in these bags, keeping the open end away from the bivy sack’s opening to prevent water entry. Use bags with a capacity of at least 1-2 liters to hold essential items.
Utilizing a Space Blanket
A compact space blanket can serve as an extra dry layer against the bivy sack’s walls. Attach the blanket to the bivy sack with cordage or clips to maintain it in place, ensuring a dry barrier between the gear and the sack’s interior. This extra layer adds an extra layer of protection against moisture.
Gear Organization and Placement
Place your gear in the waterproof bags and arrange them along the bivy sack’s floor or against the walls, away from any openings. Position the bags so that the open end is pointing away from the bivy sack’s entrance, preventing water from entering the sack through the bags themselves.
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