The double wall insulation design of the sports water bottle can keep your drinks warm for 12 hours and cold for 24 hours (the specific time depends on the actual situation).The silicone sealing ring of the lid is leak-proof, and the lid is designed with wood grain, which is very simple and fashionable.It can maintain the good flavor of the drink. Sweat resistant design, so you don't have to worry about annoying drips.Our outdoor insulated metal water bottles' body and inner and outer layers are made of quality 304 stainless steel.The cover is made of BPA free safe material. This insulated vacuum sports bottle adopts a waterproof rubber ring, which makes the sealing better, cold and high temperature resistant, and safer.