Ball medical profit rubber force 4 kg & nbsp; ball medical profit check during r & oacute; Strip condition and increase strength. R & oacute; bring useful during lessons physical education, classes sports and W TRAK you rehabilitation. Construction with solid rubber provides durability. textured surface external. & nbsp; data technical: & middot ; Model: force & middot; weight: 4 kilograms & middot; diameter: 23 cm & middot; district; D: 73 cm & middot; material: 100% rubber & nbsp; & nbsp; & nbsp;