Designed with a ribbed surface for secure footing, this Therapy Top balance board is the perfect way to strengthen your core and improve your balance. The Therapy Top stimulates the vestibular system, a system attached to the inner ear that registers movement and controls balance. Stimulation of the vestibular sense is important to help children learn to keep their balance while still or moving. Measures 15.75" x 15.75" x 3.54". Weight Capacity: 220.5lb.