Come and see our amazing products. The smart water bottle has a waterproof LED display,waterproof,it's low energy consumption and without a battery change,That can use several years!The inner wall is made of 304 grade food grade stainless steel and the outer case is made of high quality 201 stainless steel. Open your insulated bottle with the simple push of a button.Other parts of these Travel mugs are made of BPA-free PP materials,food grade contact silica gels and 100% Co-polyester plastic that make them Safe and Healthy to use.The bottl flask is leak proof and safe in the bag while on the go.400ml water bottle fit in most cupholders and easily fit in a bag to travel. Pls confirm with us about the packing info, stock color and exact production time before placing your order.