Set of 2 pilates balls, one small 15cm & one medium 22 cm. Strengthen and tone your pelvic floor muscles, hips, abdominals, obliques and back with the PTP Pilates Balls Combo. The variations in ball size (small & medium) allow you to perform a wider range of exercises with different levels of assistance or resistance. Pilates aid and coordination / 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 abdominal exercises. Features: Best for Pilates, coordination, balance, core strength and pelvic health Set includes a Small (15cm / 5.91") and Medium (22cm / 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 30+ exercises