Long-term Insulation：This insulated stainless steel water bottle is made of 316 stainless steel food-grade material，with a cooling effect that lasts at least 16 hours and a heat-retaining effect that lasts up to 24 hours or longer Sealing up：This insulated bottle flip-top design makes it easy to open and leak-proof Size：12oz stainless steel bottle measures 3.54 by 3.54 inches wide and 7.08 inches tall. Environmental Protection：This is a reusable insulated stainless steel cup with straw, material safety, non-toxic PVC Cute Looking：Adopt earphone bear appearance stainless steel insulated travel mug，Hanging Belt Design，it is a very good gift for girls and boys.