The Thinksport Stainless Steel Sports Bottle is built for active lifestyles. Designed with a double-walled vacuum-sealed construction these bottles do not sweat and keep contents hot or cold for hours. The contoured design is easy to hold and the included removable mesh filter keeps ice from blocking the spout. It is also perfect for brewing loose leaf tea or making campfire coffee! Our sports bottles undergo rigorous chemical and biological testing to ensure they do not contain any toxic chemicals.