Improve Balance and Strength: Can improve core strength, balance, coordination and flexibility. It adds instability during exercise to engage stabilizing muscles to increase fitness effectiveness.Anti-Slip and Portable: Anti-slip material, lightweight and easy to carryEco-Friendly and Anti-Burst: Made of eco-friendly and durable PVC, can support up to 300 lbs.Package Contents1 x Yoga Ball1 x Air PumpMaterial: PVCColour: Pink, Blue, PurpleLoad: 300 lbsProduct Size: 50 x 50 x 30 cm