Thick and Wide feet choose one size up.
Men's Shoe Size Conversion
US 3.5/UK 2.5/EU35/ Feet length Heel to Toe 21.5cm
US 4 /UK 3/EU36/ Feet length Heel to Toe 22 cm
US 5 / UK 4/EU37/ Feet length Heel to Toe 22.5cm
US 6 /UK 5/EU38/ Feet length Heel to Toe 23cm
US 6.5/UK 6/EU39/ Feet length Heel to Toe 23.5cm
US 7/UK 6.5/EU40/ Feet length Heel to Toe 24cm
US 8/UK 7/EU41/ Feet length Heel to Toe 24.5cm
US 9/ UK 8/EU42/ Feet length Heel to Toe 25cm
US 9.5/UK 9/EU43/ Feet length Heel to Toe 25.5cm
US10.5/ UK10/EU 44/ Feet length Heel to Toe 26.3cm
US11.5/UK11/EU 45/ Feet length Heel to Toe 27.5cm
US12.5/UK12/EU46/ Feet length Heel to Toe 28.3cm
US13.5/UK13/EU47/ Feet length Heel to Toe 29 cm
US14/ UK13.5/EU48/ Feet length Heel to Toe 29.5 cm