Carrot Cups - Double Wall Tumbler - Set of 2 x 260ml (9 fl oz) Stylish double-wall cups to keep your drinks hot or cold and your hands free of burn or condensation 2-layered borosilicate glass construction for a sturdy, yet lightweight look and feel. Inner wall holds your drink as if it's floating, while outer-wall maintains temperature Microwave and dishwasher safe Perfect for coffee and tea, but also great for beer, juice or ice cream and desserts.