The SealLine Blocker Dry Sack is a versatile, efficient-packing dry sack featuring a patent-pending rectangular shape and strong fully welded seam construction. Blocker waterproof dry sacks are the easiest way to organize and protect clothing and gear in your pack, luggage, or on a boat.

• PVC free
• Closure: Roll-Down
• Material: 70D Polyurethane-coated nylon
• Space-saving: Patent-pending rectangular shape packs 20% more efficiently than rounded dry sack shapes, saving space in you pack.
• Efficient-packing: PackTightTMpacking system takes advantage of the flat-sided, rectangular shapes of the Blocker dry sacks, closely nesting them together for easy, space-saving and intuitive organizaiton.
• Waterproof strength: 50% stronger than sewn and taped seams, all seams are welded to deliver superior strength, durability, and waterproof protection over time.
• Tough: High-strength 70-denier polyuethane-coated nylon is light enought to satisfy ounce-counters, yet durable enough to stand up to life outside a pack.
• Eco-friendlier: PVC-free materials offer a reduced environmental impact over vinyl materials.
• Secure: Roll-top closure features a grippy stiffening strip to ensure a wrinkle-free, secure seal when closing the dry sack.