Hoop is a portable Bluetooth speaker in the shape of a donut. The device is made of steel and ABS rubber for durability and comfortable grip. Simple in design, Hopp has volume buttons on the back and a power switch up top. It boasts eight hours of battery life and charges when attached to a computer via USB. Available in gray, green, red, and blue, the Hoop comes with a matching rubber cord and a hook, so that it can be looped onto a backpack or hung on a wall, keeping the music playing wherever you go.