We hate when our favorite beverage loses its frosty (or piping hot)goodness before we can fully enjoy it. That's why weover-engineered our Rambler Tumblers with kitchen-grade 18/8stainless steel and double-wall vacuum insulation. Rambler Tumblerskeep ice 2X longer than plastic tumblers and are designed formaximum ice retention - and work just as well for hot beverages.Rambler Tumblers are BPA free, including the crystal clear lid, soyou can gauge the level of your frosty beverage as it slides downthe pipe. -Holds 30 Ounces Of Liquid -Can be used for both hot andcold liquids -Made of kitchen-grade 18/8 stainless steel -BPA Free-Keeps hot or cold for hours