Gators LLC thermal insulated drinkware is 100% Made in the USA. These cups keep drinks cold & hot for hours, have reduced sweating, are top rack dishwasher & microwave safe, and BPA Free. The bottom base and walls of the tumblers are thicker than competing brands making them ~15% heavier and feel more like glass than plastic. As a result, they also insulate longer by approximately 50%. The tumblers include a sliding travel lid for drinking on the go.