TRIPLE-LAYERED INSULATION: S’well Magentite 17oz stainless steel water bottles feature triple-layered, vacuum-insulated construction, designed to keep beverages cold for up to 36 hours or hot for up to 18 with our exclusive Therma-S’well Technology; Each water bottle features unique colors, prints, patterns and textures, all while delivering superior functionality; Hand-wash only THE PERFECT FIT: Our metal 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: S'well beverage containers are insulated with a copper wall layer to eliminate condensation by providing an exterior that won't sweat on your hands or in your bag WORRY-FREE HYDRATION: Your search for safety is over; All S’well containers are BPA-free and composed of 18/8 premium food-grade stainless steel; We are compliant with California Prop 65 regulations and our products are certified to meet all regulatory requirements by an independent and accredited testing facility 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.