Size: 

UK SIZE 3=EU SIZE 36=Foot length =9.06 inches=23.0cm

UK SIZE 4=EU SIZE 37=Foot length =9.25 inches=23.5cm

UK SIZE 5=EU SIZE 38=Foot length =9.45 inches=24.0cm

UK SIZE 5.5-6=EU SIZE 39=Foot length =9.65 inches=24.5cm

UK SIZE 6.5=EU SIZE 40=Foot length =9.84 inches=25.0cm

UK SIZE 7=EU SIZE 41=Foot length =10.04 inches=25.5cm