The 17oz bottle is the ideal water bottle size, great for staying hydrated all day long;Keeps your drinks cold for 24 hours, hot for 12;18/8 triple-walled stainless steel, non-toxic, non-leaching, phthalate and BPA free and ethically-sourced to protect your health and the environment;Vacuum sealed, bottles do not condensate;The Shimmer Collection is featured in a glossy lacquered finish