Air Max Exosense Junior trainers by NIKE. The trainers have a breathable mesh upper. They have a lace closure, a reinforced toe box, a padded heel cap, a removable insole, a pull-tab at the heel and on the tongue and a flexible rubber outsole. – This product features lightweight and durable Nike Air cushioning.– Upper: Other Materials, Textiles– Lining: Textiles– Sole: Other Materials.– Please note that when you purchase shoes for your child, you should select a size that is 1.5 cm larger than your child's foot. Wellies and boots should be up to 2 cm larger, for extra socks and insoles.Size Guide (Foot Length): 35 = 216 mm35.5 = 222 mm 36 = 224 mm36.5 = 227 mm38 = 235 mm38.5 = 238 mm39 = 243 mm 40 = 245 mm