Featuring a waterproof valve that purges trapped air, the versatile Blocker PurgeAir Dry Sack resists ballooning to help maximize use of space within a pack or bag. Plus, the fully waterproof construction ensures essential contents are protected.
70D polyurethane-coated nylon
Lightweight 70D polyurethane-coated nylon materials are tough and resilient. More durable and versatile, these materials are great for all-around use with confident waterproof protection.
Unique and waterproof PurgeAir valve vents trapped air, helping the sack compress further after being sealed, and is both more durable and more reliably waterproof than waterproof/breathable fabric membranes.
Roll-top closure features a wrinkle-free stiffening strip to ensure a secure seal when closing the dry sack.
Fully welded seams result in stronger and more durably protective construction compared to sewn-and-taped seams.
PackTight™ packing system sacks feature flat-sided, rectangular shapes that nestle closely together, packing 20% more efficiently than rounded sacks for easy, space-saving organization.