Measure the circumference of the widest part of your calf (for leg weights) and the widest part of your forearm (for arm weights)
body togs leg weight sizing
| 10.0-13.0″ | Small | 
| 13.0-17.0″ | Medium | 
| 17.0-19.0″ | Large | 
| 19.0+” | X-Large | 
body togs arm weight sizing
| 8.0-11.0″ | Small/Medium | 
| 11.0-14.0″ | Medium/Large |