Whether you're out running, hiking or hitting the yoga studio after work, the 5ive Star Gear Flexible Water bottle can provide your hydration. Made from a BPA free material that is lightweight, flexible and packable with 80% less weight and bulk than a hard bottle. Can be frozen and unfrozen repeatedly and has a multi-use cap with screw on/off design or you can use the push/pull design of the cap when left on for simple drink through access. Includes carabiner for easy attachment to any bag for quick and easy access while on the go. Each bottle holds 550 ml (18.6 oz.) of liquid.