Enhance your Pilates training with the PTP Pilates balls. Suitable for all fitness levels and extremely versatile, they can be used in leg, arm, and ab workouts. Features & Benefits: Best for Pilates, coordination, balance, core strength, and pelvic strength Set includes a Small (15 cm/5.91") and Medium (22 cm/8.66") size for added exercise versatility Latex-free, non-slip, and anti-burst Compact and lightweight - can be deflated for easy storage or transport User-friendly poster with exercise guide BALANCE: Joint stabilisation and core control. Ideal to improve motor coordination and posture. FLEXIBILITY: Stretching and body toning. To lengthen muscles and increase range of motion. Please store balls in a box or basket when not in use. In rare cases, the PVC may react with wood stain or paint and leave marks at contact points.