Inflatable balance disc is made of high quality PVC, which is durable, anti-slip and crack prevention. Suitable for both adults and kids to improve balance, core stability, coordination and flexibility Feature: High quality PVC, anti-slip and crack prevention. Spiky point has a good grip, and a slight massage role. 13in in diameter, and gift a hand pump, color random shipment. Nice cushion for both adults and kids to improve balance, core stability, coordination and flexibility. Specification: Material: PVC Color: Yellow / Red / Green / Purple / Blue / Black / Pink / Grey (optional) Diameter: 33cm / 13in Weight: 920g / 2.0lb Package weight: 940g / 2.1lb Package List: 1 * Yoga Balance Disc 1 *Hand Pump