The Sea to Summit eVAC Dry Sack. Here is a slimmed down version of our award winning eVent Compression Dry Sack. We use waterproof, air permeable eVent fabric on the base for valve-free air expulsion, allowing compact packing. Instead of straps for compression, just roll the sack down and air is pushed out of the base. Then close the buckle and you've just saved space and weight. These sacks are oval-shaped, rather than round so they resist rolling when laid on their side.
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