AKONA Dry Bags MATERIALS: 70D nylon with PVC coating. Puncture and tear resistant material that withstands elements and abrasion. SPECIAL FEATURES: Clear PVC back window for easy viewing of contents. Allows the operation of buttons for walkie-talkies and GPS units. Perfect for a Wallet or Phone Main pocket with Velcro roll down closure. lim neck strap with toggle adjustment and two attachment grommets. Thermal Fabric welded for a waterproof bond.