Made from strong, borosilicate glass, this is a reusable alternative to single-use coffee cups. The silicone band will insulate your hand from the hot beverage inside the cup. The matching, swivel-style silicone cap makes opening, sipping, and closing a breeze. 13 ( h ) cm borosilicate glass, PP, silicone 340ml black lid matching silicone cap and band packaged in a Kooshty gift box Use & Care wash before first use the glass cup is dishwasher safe, but its recommended to hand wash the lid so as not to damage the seal. the glass cup and silicone band are microwave safe, but the lid is not Caution use with care when consuming hot beverages do not overfill ensure the lid is secure before drinking do not hold glass filled with hot liquid without the silicone sleeve do not use glassware that is chipped or cracked Whilst this product is dishwasher safe, branding methods, other than laser engraving and sublimation, will not withstand dishwasher cleaning.