We hate when our favorite beverage loses its frosty (or piping hot) goodness before we can fully enjoy it. That's why we over-engineered our Rambler Tumblers with kitchen-grade 18/8 stainless steel and double-wall vacuum insulation. Rambler Tumblers keep ice 2X longer than plastic tumblers and are designed for maximum ice retention and work just as well for hot beverages. Rambler Tumblers are BPA free, including the crystal clear lid, so you can gauge the level of your frosty beverage as it slides down the pipe. Holds 20 Ounces Of Liquid . Can be used for both hot and cold liquids . Made of kitchen-grade 18/8 stainless steel. 1.9 x 7.8 x 8 inches