TRIPLE-LAYERED INSULATION: S’well 500ml Bottle with stainless steel. Triple-layered, vacuum-insulated construction. Exclusive Therma-S’well Technology keeps beverages cold for 36 hours and hot for 18. Sleek and beautifully crafted. Handwash only. THE PERFECT FIT: Our stainless steel water bottles and beverage containers are designed with an opening wide enough for most ice cubes so you can easily refill and reuse it over and over. Whether you're hitting the road, bike trails, or the gym, you’ll find S’well fits just right in most standard-size cup holders. DON'T SWEAT IT: Offers a condensation-free exterior that won't sweat in your hands or bag. WORRY-FREE HYDRATION: Made from 18/8, food-grade stainless steel with superior construction. BPA/BPS-free and reusable. SUSTAINABILITY WITHOUT COMPROMISE: You won't have to compromise fashion and functionality to live more sustainably with our sleek, beautifully crafted, built to last bottles. Every S’well purchased counts towards displacing millions of single-use plastic bottles.