Polar Bottle Zipstream Breakaway OUR MOST INNOVATIVE PRODUCT TO DATE - introducing the Polar Bottle zip stream breakaway insulated water bottle, our most innovative design yet ZIPSTREAM HIGH FLOW CAP - Get a refreshing burst of water with just a squeeze, thanks to a self-sealing valve in the cap that allows pressure to build inside the water bottle, without a single drop leaking out, even when in the open position THERMAL PROTECTION - the zip stream breakaway insulated water bottle 100% BPA-FREE WATER BOTTLES - Polar Bottle water bottles are and always have been 100% BPA-free and Phthalate-free, and made in the USA SPORTS WATER BOTTLE OR BIKE WATER BOTTLE - It's the way active people hydrate. Take it everywhere, from a run to a drive to a bike ride, as it fits in all standard cup holders and bike water bottle cages.