Sea To Summit eVac Compression Dry Bag UL

The UL version of the eVac Compression Dry Bag follows the same principle as its larger sibling — an eVent membrane base that lets air escape through the fabric without a purge valve — but in a lighter build. Thinner 30D Ultra-Sil nylon and a plain roll-top closure without compression straps cut both weight and packed bulk compared with the standard eVac line; the base's hydrostatic rating drops to 2,000 mm, enough to protect contents from damp inside a pack but not for full submersion. Sizes run from 3 to 20 L, weighing 57–110 g depending on volume — a typical 8-litre bag comes in around 76 g. Skipping the valve and straps keeps the construction simple and light, with compression handled entirely by the membrane's air permeability rather than cinch straps. A good match for compressing a sleeping bag or down layers when weight matters more than resistance to full submersion.