TRIPLE-LAYERED INSULATION: S’well 18oz stainless steel Tumbler with slide-open lid. Triple-layered, vacuum-insulated construction. Exclusive Therma-S’well Technology keeps beverages cold for 12 hours and hot for 4. Sleek and beautifully crafted. Top-rack dishwasher safe. THE PERFECT FIT: Features an 18/8 stainless steel lid and straw to create a splash-proof experience that's great for at-home or on-the-go sipping. A handle makes it easy to carry. DON'T SWEAT IT: Offers a condensation-free exterior that won't sweat in your hand or on your table. BPA-FREE & ECO-FRIENDLY: Made from high-quality, BPA-free stainless steel, offering a safe, reusable alternative to disposable cups and bottles. SUSTAINABILITY WITHOUT COMPROMISE: You won't have to compromise fashion and functionality to live more sustainably with our sleek, beautifully crafted, built to last styles.