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Air-Sheath is a cup sheath designed to protect hand from hot water. Using the principle of air expand when heated, this product can maintain the original form when the cup is empty or filled with cold water and expand to thick sharp to separate hands from hot when we fill hot water in. It can adjust itself by the simple principle and get the advantage of saving space and protection.
Industrial Design Department，USST
Xing Qifeng Yang Jidong