size: 

 S code Size 18 * 11cm Weight 85g. Suitable for 30-35 yards shoes   

 M code Size 20 * 12.5cm Weight 120g. Suitable for 34-39 yards shoes  

 L code Size 21 * 13.5cm Weight 130g. Suitable for 40-43 yards shoes   

 XL code Size 23.5*14cm Weight 150g. Suitable for 44-47 yards shoes