Designed for a wealth of core exercises to improve balance, strength, and flexibility, the Champion Sports 53 cm FitPro Training and Exercise Ball is a great addition to any workout regimen. Made from high quality Italian resin, this exercise ball is durable enough to withstand daily use, and the exterior feels soft against your skin. At 53 cm in diameter, this exercise ball is designed for people ranging from 5'1" to 5'6" in height.• Use to perform a wide range of balance, core, strength, flexibility, and rehabilitation exercises• Improves, maintains, and strengthens hard-to-reach core muscles• Made from high quality Italian resin materials for a soft feel• Burst resistant for increased durability during exercise routines• Recommended Height: 5'1" - 5'6"• Size: 53 cm• Color: Royal BlueSpecial Shipping Information: This item ships separately from other items in your order. This item cannot ship to a P.O. Box. This item may be subject to additional processing days.