BPA free, made using the finest plastics and metals Great for use in both outdoor and indoor activities Large opening on wide-mouth bottle easily accommodates ice cubes, fits more water purifiers and filters, and makes hand-washing a breeze. Printed graduations let you keep track of your hydration. Attached Loop-top never gets lost and screws on and off easily. Convenient wide-mouth design in a handy 16 oz size. Easily add ice or clean up after transporting juice or sports drinks. Made from Tritan copolyester so it's super tough and nice looking too.