Upper material: Synthetic leather Applicable age: Children's clothing (1-3 years old), little kids' clothing (4-6 years old) Style: Casual Color: Bright F1 pink [with fleece and thickening], bright F1 beige [with fleece and thickening], bright F1 black [with fleece and thickening Size Size 21 [inner length 13cm], size 22 [inner length 13.5cm], size 23 [inner length 14cm], size 24 [inner length 14.5cm], size 25 [inner length 15cm], size 26 [inner length 15.6cm], size 27 [inner length 16.2cm], size 28 [inner length 16.8cm], size 29 [inner length Length: 17.4cm, size 30 [Inner length: 18cm]