OEELINN 20 oz Tumbler with Lid, Stainless Steel Vacuum Insulated Double Wall Travel Tumbler, Durable Insulated Coffee Mug, Thermal Cup with Splash Proof Sliding Lid

High-quality Materials High-quality food grade stainless steel materials, keep your water glass away from rust and metal odors. Double-layer food grade stainless steel liner, cold drinks stay icy cold and hot drinks stay piping hot. The plastic bottle cap without BPA is equipped with a built-in exhaust valve, which can prevent gas or liquid from splashing when the bottle cap is opened to ensure safety. If you encounter any difficulties with the product, you can communicate with us. We'll take care of it for you.