Dry bag
Overview
A dry bag is a waterproof or highly water-resistant bag with a roll-top or similar closure, used to protect gear from rain, splashes, and incidental water exposure.
Key points
- Commonly used for sleeping bags, clothing, electronics, and documents.
- Relies on proper closure technique to maintain water resistance.
- Available in different sizes, weights, and materials.
- May be used inside packs, in boats, or during stream approaches.
- Not all dry bags are intended for prolonged submersion.
Details
Dry bags provide an added layer of protection for gear that is sensitive to moisture. In a backpacking context, they are often used inside packs to isolate sleeping insulation, spare clothing, and electronics from rain and condensation. Some hikers also use them for food storage, keeping items organized and better protected from incidental moisture.
Most dry bags use a roll-top closure: the top is folded over several times and then secured with a buckle or clips, creating a seal that resists water ingress. Correctly rolling and sealing the bag is important to achieve the intended performance. Overfilling can make proper closure difficult.
Materials range from robust, heavier fabrics used in paddling contexts to thinner, lighter fabrics marketed for weight-conscious hikers. Thinner bags are often designed to resist rain and splashes rather than extended submersion.
Hikers choose how many and what type of dry bags to carry based on expected precipitation, river exposure, pack waterproofness, and personal tolerance for moisture risk. Some combine dry bags with pack liners for layered protection.
Related topics
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