LOCK & LOCK Hero Stainless Steel Vacuum Insulated Thermal Travel Mug, 13.5 oz, Black Durable 18/8 stainless steel interior and exterior Triple layer insulation cap that allows liquids to stay hotter/Cooler than others Included with removable straining stopper inside the neck of the bottle Anti slip silicone seal floor Mat on the bottom of the mug Insulated and Leak proof lid, keeping your drink even Colder without ever sweating