S'well's ‘Elements’ Collection is designed for performance and will keep cold drinks cold for 24 hours and hot ones hot for 12 - Triple layered, vacuum-insulated construction - Made from 18/8, food-grade stainless steel with superior construction that allows for refilling and reusing easily to reduce the need for single-use plastic water bottles. - Copper wall layer creates a condensation-free exterior that won't sweat on your hands or in your bag. - Perfectly for staying hydrated on-the-go. - Bottle mouths fits ice cubes. - BPA Free and reusable.