Sports Insole Size Guide Archies Footwear Size Min Length Max Length EU 36 – 36.5 23.1 cm 23.9 cm EU 37 – 37.5 24 cm 24.7 cm EU 38.5 – 39 24.8 cm 25.5 cm EU 39.5 – 40 25.6 cm 26.4 cm EU 41 – 41.5 26.5 cm 27.2 cm EU 42.5 – 43 27.3 cm 28.1 cm EU 43.5 – 44 28.2 cm 28.9 cm EU 45 – 45.5 29 cm 29.8 cm EU 46 – 46.5 29.9 cm 30.6 cm EU 47.5 – 48 30.7 cm 31.5 cm EU 48.5 – 49 31.6 cm 32.2 cm EU 50 – 50.5 32.4 cm 32.2 cm