Moms love flowers â and great refreshing drinks. Lucky for you, gift-giving just got easier because this tumbler will keep your mom in both every time she sips. Tervis Tumblers are double-wall insulated to keep hot drinks hot and cold drinks cold, helping to reduce condensation. They are microwave and dishwasher safe, fit most drink holders, and made in America. Comes with a standard lid and a lifetime guarantee.