This pack of three exceptional Shatterproof Mugs are each made from a clear, tough, shatterproof material which prevents accidental breakage and makes the mugs extremely durable and long lasting.These strong, clear plastic mugs have a large, smooth handle for ease of use and clear graduated markings to measure liquid. These mugs are supplied with two interchangeable lids, one for anti-spill, and one with a large drinking spout. These mugs are dishwasher safe and can be used in a microwave oven however the lids should be washed my hand.