Size 20, with an insole length of 14cmSize 21 has an insole length of 14.5 cm15cm inside size 2215.5cm inside size 23Size 24 has an insole length of 16cm16.5cm inside size 2517cm inside size 26Size 27 has an insole length of 17.5 cmSize 28 has an insole length of 18cm18.5cm inside size 2919cm inside size 30Inner length 19.5cm in size 3120cm inside size 3220.5cm inside size 3321cm inside size 3421.5cm inside size 3522cm inside size 36Inner length 22.5cm in size 37