The one-piece shape is 5? long and constructed of environmentally friendly Rubberwood. Easy to hold with smooth, curved edges, and provides a soothing shaking sound using recyclable pellets.? Great addition to story and playtime. The simple artwork on the face will appeal and engage. ? A safe loop provides an easy hanging solution for strollers, car seats, or in the house. Provides rhythmic foundations that spur creativity and imagination.