Airlock Patches are compact field-repair patches engineered specifically for TPU inflatables such as sleeping pads and water bladders.Why We Like ItGeneric patches can lift as an inflatable cycles between packed and pressurized. Airlock uses a thin TPU film and TPU-compatible adhesive so the repair flexes with the original material.Best ForSleeping pads, water bladders, TPU dry-bag liners, and other clean, dry TPU surfaces.Materials & Construction Transparent 0.16 mm thermoplastic polyurethane film Pressure-sensitive adhesive backing Rounded 36 × 28 mm shape with split wax-paper liner Application Deflate and clean the repair area before applying Usable immediately; bond strength continues to build toward full cure 8 patches per pack; 0.39 g per patch Details Brand: Igneous Product: Airlock Patch Material: TPU with pressure-sensitive adhesive Pack Size: 8 patches SKU: IG-AIRLOCK-PATCH