Gently used. The Cloud b Sleep Sheep On The Go is a machine-washable sheep that has a secret sleep solution for little ones. It has a sound machine that plays four soothing sounds, including a mother's heartbeat, to help children go to sleep faster. It also has two sleep-timer options with auto shut-off. The sheep has a hook-and-loop fastener to attach to a crib or stroller and requires two AA batteries. It is 8.6 inches high.