... 4. Any color is available Double Grip PVC Medicine Ball & weigth ball & fitness ball 1.size: Size: 3kg,4kg,5kg,6kg,7kg,8kg ... & 5lb,6lb,8lb,10lb,12lb,14lb,15lb,16lb,18lb,20lb2.logo printing are avaliable 3.material: pvc+sand 4.color : Green,blue ... the field of sports medicine. It should not be confused with the larger, inflated exercise ball. PVC Medicine Ball with two handle