ITEM: FIRST AID BACKPACK SIZE: 40*35*15CM. MATERIAL: TPU.CAN BE COLD STORAGE OR HEAT PRESERVATION FOR 72HOURS. WATERPROOF GRADE IPX7. GOOD FOR OUTDOOR ACTIVITIES LIKE HIKING, HUNTING, FISHING,CAMPING,PICNIC ETC.QUANZHOU XINHENG OUTDOOR CO.,LTD.,: 1, PROFESSIONAL MANUFACTURE ESTABLISED IN QUANZHOU CITY, FUJIAN PROVINCE, CHINA SINCE 1992WITH MORE THAN 400WORKERS.   2, MAIN IN KINDS OF WATERPROOF BAGS LIKE: WATERPROOF COOLER BAGS, WATERPROOF HIKING BAGS, WATERPROOF HUNTING BAGS, WATERPROOF CAMPING BAGS, WATERPOOF BOATING BAGS, WATERPOOF FISHING BAGS, WATERPOOF PICNIC BAGS ETC. 3, AIRTIGHT & WATERTIGHT GRADE LIKE IPX7 ETC.. 4, OUR MAIN CUSTOMERS LIKE KARRIMOR, HARKEN, EXTREME COLD, GRIZZLY, SAMSONITE ETC. 5, OUR FACTORY NEAR TO JINJIANG PORT(30MINS,), XIAMEN PORT(1.5HOURS) AND QUANZHOU STATION(10MINS.). WELCOME YOU COME AND VISIT OUR FACTORY FOR DEEP&FURTHER DISCUSSING! FAQ: 1. What the material of your waterproof bag? Answer: It's made of powerful TPU which is 10 times stronger than cheaper vinyl versions. 2. Do you have professional certificates? Answer:Of course. Our products have passed the ROHS ,ipx7 ,and ISO , quality is surely guaranteed, you can buy it without any risk. 3. Could I use my BAGS with this bag while in water ? Answer:Yes .You can operate your phone in the water. And it’s used for boating, fishing, surfing, swimming, diving and any other outdoor sports. 4. Could this bag drown into the water ? Answer: In order to solve this problem, we have added the EVA into the bags , so you don't need to worry about your BAGS drown into the water . 5. How about the price of your bag ? Answer: We choose the best materials to make this bag, so maybe our products a products is the best.re a little expensive than others, but the quality and service of our