This is a lightweight mug cup with excellent heat and cold retention. The double-layer structure with insulation (foamed resin) inside enhances its heat and cold retention capabilities. It comes with an easy-to-grip handle. The lid is a tightly sealing, openable type. [Materials] Body: Polypropylene Insulation: Foamed resin Gasket: Silicone Lid: Polypropylene + TPE (Thermoplastic Elastomer) [Weight] 220g [Size] Φ8.3×14.7cm (Mouth) [Capacity] 330mL [Heat/Cold Resistance Temperature] Body: 100/-20℃ Lid: 100/-20℃ Gasket: 180/-60℃ [Kitchen Appliance Compatibility] Dishwasher: Not usable, Microwave: Not usable The condition is good, but please refrain from purchasing if you are sensitive. ⭐︎If you have any questions, please contact us in the comment section! Thank you.