Product Details Return to Top Overview The hottest mug to hit the coffee scene in years has no handle. Instead, double walls insulate your hot or cold beverage and make it look like it’s floating in air. The tumblers are mouth-blown of borosilicate glass, making them strong, lightweight and heat-resistant. It’s no wonder these beauties won the prestigious European iF Design Award. Set of 2 8-oz. capacity Microwave and dishwasher safe Please use care when placing ice into the glass to avoid fracturing the inner layer. 4 5/8" H x 3 1/2" Dia.