Product name:  Fitness Stability Ball/ exercise ball/medicine weight ball

1. Material:  rubber ;

2. Inflatable; 

3. Size1:  2lb,4lb,6lb,8lb,10lb,12lb,14lb,16lb,18lb,20lb.

4. size 21kg,2kg,3kg,6kg,8kg,9kg,10kg.

5. 2-color combination;

6. Ideal for rotational movements, core exercises of many types and dynamic strength training