The product is particularly hard correction strong recommended freshman yards
         21-22 corresponds to 13 cm foot length
         23-24 feet corresponding to 13.8 cm long
         25-26 corresponds to 15 cm foot length
         27-28 corresponds to 16 cm foot length
         29-30 corresponds to 17.3 cm leg length
         31-32 corresponds to 18.4 cm foot length
         33-34 corresponds to 19.5 cm leg length
         35-36 corresponds to 20.8 cm foot length
         37-38 corresponds to 22 cm foot length
         39-40 corresponds to 23.4 cm foot length