From the Borealis Collection. The Borealis Collection captures the beauty of the Northern Lights with jewel-toned hues and stunning shimmer.The 17 oz emulates a standard size water bottle, and is perfect for staying hydrated at the gym or on-the-go. Keeps beverages cold for 41 and hot for 18.S'well bottles feature Therma-S’well(R) Technology with triple-layered, vacuum-insulated construction designed to keep beverages colder or hotter, longer than all the rest.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.Stainless steelHand washImportedSIZINGCapacity, 17 oz.