Small but mighty, Gaiam’s 5” massage ball is just the right size for targeting and releasing the muscles of the hips, glutes, lower back, and shoulders. Multiple surface textures work to go deep and get the job done. And because it’s lightweight, you can take it anywhere. Features- Ideal for targeting hard-to-reach areas 5” foam massage ball with semi-firm density Pinpoints small muscle groups on hips, glutes, lower back and shoulders Multi-texture surface provides a deeper massager Lightweight and portable Diameter: 12.7cm Made of foam Deeply textured surface