This stylish 9 oz. ceramic mug features a silicone outer sleeve that is comfortable to grip. The ceramic mug's outer finish is matte and the inner finish is glossy.  The lid is PP plastic with a slider open/close with a snug fit, splash-resistant design. This mug is suitable for both hot and cold beverages; keeps hot liquids for 3 hours and cold liquids for 2 hours. Hand-wash only.