Training and exercise ball is made from an exclusive, Flexton Silpower material to allow the ball to deflate slowly if it becomes damaged by small cuts or punctures. Foam-like, padded surfaces are super soft and tacky for enhanced comfort. Burst-resistant construction allows safe use for rehabilitation, fitness, dance, sports, therapy and gymnastics. Training and exercise ball is perfect for improving balance, posture, flexibility, core strength and hard-to-reach muscles.