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.
Lightweight 70D polyurethane-coated nylon materials are a tougher, more resilient cousin to the ultralight BlockerLite materials. More durable and versatile, these materials are great for all-around use with confident waterproof protection.
The 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.