This wrist silicone water bottle, the use of food grade silicone material, BPA free, safe square drinking, unique bite design, no air return design, sealed no water leakage, movement does not shake, no need to open the lid, that is, bite and drink, can withstand -20 degree centigrade-100 degree centigrade temperature, suitable for outdoor running, marathon activities, cycling, etc., can print LOGO, welcome to consult customers. 1 location includes the shipping cost to US. Orders of 1,500 pieces or greater are eligible for sea shipping. 100% guarantee for quality. Rush Service.