We hate when our favorite beverage loses its frosty (or piping hot) goodness before we can fully enjoy it. That’s why RTIC over-engineered their tumblers with kitchen-grade 18/8 stainless steel and double-wall vacuum insulation. Our powder coated cups keep ice 2X longer than plastic tumblers and are designed for maximum ice retention – and work just as well for hot beverages. RTIC 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. Vinyl is outdoor rated for up to 3-5 years and is waterproof. It is NOT dishwasher safe. Hand wash only.