Swell insulated 17 ounce water bottle and a fun pattern barely if ever used. Keeps drinks hotter or colder, for longer. BPA/BPS-free and reusable. Vacuum-insulated, food-grade 18/8 stainless steel. S'well bottles 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 bag. BPA/BPS-free and reusable. Hand-wash only.