The patented Polar Bottle water bottle features an insulating layer between two walls of plastic, so it keeps liquids cool twice as long as other water bottles. The Made in America bottle fits standard bike water bottle cages and features a convenient, removable carrying strap. All Polar Bottle products are, and always have been, BPA-free and Phthalate-free. Keeps cold drinks cold & hot drinks warm for extended periods Dual-wall construction features an insulating layer of air to keep heat out and cold in Inner foil liner reflects solar rays for added thermal protection Wide mouth easily fits ice cubes and facilitates cleaning Removable drinking valve for thorough cleaning Dishwasher and freezer safe Made in Boulder, Colorado Specs: Size: 20oz Type: Insulated Color: Rainbow Tie-Dye