NIKE Lightweight Hydration Belt - 4 Bottle - Volt/Black No-look click-in bottles/4 6oz. containers are easy to grab, click securely in and out of holsters. Stretch padded belt/comfortable no-bounce fit helps prevent rubbing and chafing. Audio/Nike+ compatible/Holds Ipod and Nike+ transmitter, keeps cords out of the way. Running race number holder w/toggles. Embroidered SWOOSH design logo, fits waist size range 23" - 42".