Dry Packs - perfect for protecting your belongings while outdoors. These hermetically sealed packs are waterproof and will keep sand and dust out of your belongings. Great for the beach and the snow fields. Before using, check that the seal is free of any foreign body (dust, grit etc). Place an object such as some paper inside the pack, ensure knobs are fully closed in horizontal position, submerge the pack in water and gently squeeze the pack. Initially bubbles will escape from the clamp, however should there be further bubbles, the seal may be faulty. As long as there is air in the pack it will float to the surface after being submerged. (float test, bubble test) Empty water from the clamp before opening. Avoid long exposure to direct sunlight, which may damage contents. Keep the pack in perfect condition by storing out of direct sunlight and use the silica pack, avoid contact with any abrasive or sharp objects, clean with cold fresh water after use (hot water will damage the seal). Use soap and water or alcohol for any stubborn stains. Dry Pack - Perfect for keeping small objects and your electronic devices free of dust and water. (100% water proof). Speak and listen through the pack. Great for the beach. Property of TPU: 1.Abrasion resistance: Five times tougher than natural rubber. 2.Low temperature flexibility: Retain elasticity, flexibility and other mechanical properties even at minus 35 degrees Centigrade. 3.Heating resistance and antioxidant: It is easy for regular rubber material to be oxidized for staying at or beyond 70 degrees Centigrade environment a long time, while TPU not. In normal cases, TPU can resist up to 120 degrees Centigrade. 4.Oil resistance. 5.Air tightness.
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