With a waterproof valve that purges trapped air, the 20-liter SealLine Blocker PurgeAir dry sack resists ballooning to maximize space in a pack or boat; plus, it's waterproof to keep your gear dry.
Cheapest price in the interval: 23.73 on February 15, 2022
Most expensive price in the interval: 23.73 on March 27, 2022
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