Upper material: Artificial leather Sole material: PVC Wearing method: Velcro Colour: beige, brown, black Size The inner length of size 21 shoes is approximately 14cm, size 22 shoes is about 14.5cm, size 23 shoes is about 15cm, size 24 shoes is about 15.5cm, size 25 shoes is about 16cm, size 26 shoes is about 16.5cm, size 27 shoes is about 17cm, size 28 shoes is about 17.5cm, size 29 shoes is about 18cm, and size 30 shoes The inner length is approximately 18.5cm. The inner length of size 31 shoes is about 19cm, and that of size 32 shoes is about 19.5cm