"[Coffee-Dedicated Convenience Store Mug] DOSHISHA Convenience Mug Coffee Specialist 400ml Black Completely Watertight Type Thermal Insulation/Cooling 2-Way (Tumbler Cup Holder) Vacuum Double Structure ON℃ZONE (Ondo Zone)" ⚫︎ I've been using it about twice a week for about six months to put coffee in. The lid gasket is missing, so it's not included.