EASY GRIP: the inner mugs are fitted with silicone sleeves to provide a comfortable grip and added heat protection. STACKABLE DESIGN: these stackable coffee cups are designed for easy storage, so theyll take up less space in the cupboard. DISHWASHER-SAFE: its easy to keep these coffee mugs clean, as they can be popped into the dishwasher. . La Cafetiere 3pc Family Mug Set, 380ml, 200ml & 100ml, Red