Product information:

Function: Breathable
Thickness: single
Inside material: mesh
Applicable age: children
Sole material: natural rubber
Upper material: fiber mesh
Color: black, beige

Size Information: 

Size: 21 yards/internal length 14.3cm, 22 yards/internal length 14.8cm, 23 yards/internal length 15.3cm, 24 yards/internal length 15.8cm, 25 yards/internal length 16.3, 26 yards/internal length 17cm, 27 yards /Inner length 17.7cm, 28 yards / inner length 18.4cm, 29 yards / inner length 19cm, 30 yards / inner length 19.7, 31 yards / inner length 20cm, 32 yards / inner length 20.6cm, 33 yards / inner length 21.3cm , Size 34 / inner length 22cm, 35 size / inner length 22.5, 36 size / inner length 23cm, 37 size / inner length 23.5cm