Tervis Clear Colorful Tabletop Made In Usa Double Walled Insulated, 4Pk, Clear Each tumbler features double-wall insulation that keeps hot drinks hot and cold drinks cold.. Tervis tumblers feature double-wall insulated construction that keeps drinks hot or cold longer and reduces condensation to prevent rings on your table. Strong, impact resistant BPA-free material means these tumblers can take a tumble without shattering and won't retain tastes or odors. For home or on the go, Tervis drinkware is made for the moments when memories are made. Most tumblers are microwave, freezer and dishwasher safe for no-worry convenience and fit most cup holders. Each classic tumbler is proudly made in America and backed by a Lifetime Guarantee so you can buy with confidence.