Through Authenticate 
// Features
*Fits 45cm gym ball
*Designed to engage your core throughout the day and is easily adjustable to fit your height.
*Helps to build a healthier core, align the spine, and relieve back pain & stiffness.
*Produced by Taiwan manufacturer with good quality.
// Specification
Size: 67*60*68~75cm
Back supporter height adjustable in 4 section
