Keep your hot and cold drinks fresh longer using this Hydro Flask Wide Mouth Bottle with a Flex Cap. Made of 18/8 pro-grade stainless steel with double-wall vacuum insulation to keep beverages cold for up to 24 hours and hot for up to 12 hours. With a leakproof seal and Flex Strap, the Flex Cap makes transporting and enjoying your favorite drinks while on the go easy and comfortable.