Material: Mesh 
<br />Size Chart:
<br />EU 31 =Us13= Inner Length 194 mm
<br />EU 32 =Us1= Inner Length 200 mm
<br />EU 33 =Us1.5= Inner Length 206 mm
<br />EU 34 =Us2.5= Inner Length 215 mm
<br />EU 35 =Us3= Inner Length 221 mm
<br />EU 36 =Us4= Inner Length 228mm
<br />EU 37 = Us4.5=Inner Length 233 mm
<br />EU 38 =Us5.5= Inner Length 241 mm
<br />EU 39 =Us6= Inner Length 252 mm
<br />EU 40 = Us7=Inner Length 255 mm
<br />Note: PLS confirm your kids foot length. Generally speaking, you add 5mm to your kids original foot length to choose the Inner size. For example, if kids foot length is 165 mm, you'd better choose the 170mm(Size 28),not 165mm(Size 27)!!!
<br />we wish you have a happy shopping experience, thank you.