FitPro Ball Chair Youth Size - 20"L x 17"W x 23"HThe FitPro ball chair is a great alternative to traditional classroom chairs that provides ergonomic benefits by using a student's abdominal muscles to balance while they sit and study. This chair allows students to improve their posture and strengthen their core, all while providing lumbar support to their back. These chairs are easy to transport thanks to its lightweight and compact design. Despite it's easy to move design, the frame is durable,