This is a stainless steel tumbler from "maruka HOME COORDY (Home Coordy)". It has a slide-open lid to prevent dust and other particles from entering. The capacity is 300mL. Made of stainless steel, it has heat and cold retention properties. It has a standard design suitable for everyday use in the office or at home. ⚫️Cup Double-walled vacuum construction for heat and cold retention, and condensation resistance. Comes with a handle for easy carrying. ※Do not use a dishwasher or dryer. ※Do not use in a microwave. 《Black》Model number: HC-20STWH30BK Materials: Body inside/outside/drinking spout: stainless steel, Lid: polypropylene, Handle: ABS resin Capacity: 300mL (Actual capacity: 310mL, Suitable capacity: 250mL)