TRIPLE-LAYERED INSULATION: S’well Slam Dunk 17oz stainless steel water bottles feature triple-layered, vacuum-insulated construction, designed to keep beverages cold for up to 41 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.

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.