The 30oz Tumbler XL is ideal for staying hydrated throughout the day with iced tea, flavored water, and more. A stainless steel lid and built-in straw create a splash-proof experience that's great for at-home or on-the-go drinking. • S'well Tumblers feature Therma-S’well® Technology with triple-layered, vacuum-insulated construction designed to keep beverages colder or hotter, longer than all the rest. • Offers a condensation-free exterior that won't sweat in your hands or on tabletops. • Tumbler is made from 91% recycled food-grade 18/8 stainless steel. • Lid and straw are made from 18/8 stainless steel. • BPA/BPS-free and reusable. • Dishwasher safe or hand wash with warm soapy water. Lid is top-rack only. • 30oz Tumbler XL keeps drinks cold for 36 hours, hot for 9, and iced for 3 days. • Hot liquids may scald. Allow liquids to cool to a drinkable temperature (140°F / 60°C) before using.