Children Rubber Boots Waterproof Flower Print Girls Toddler Sneakers Kids Leather Snow Boots Non-slip Plush Baby Boy Ankle BootsInsole Length=foot length+1.5cm(winter shoes)Insole Length=foot length+1cm(Autumn Spring shoes)CN size 21(Inner foot length 13.5cm)=Fit foot length about 12.5 cmCN size 22(Inner foot length 14cm)=Fit foot length about 13 cmCN size 23(Inner foot length 14.5cm)=Fit foot length about 13.5 cmCN size 24(Inner foot length 15cm)=Fit foot length about 14 cmCN size 25(Inner foot length 15.5cm)=Fit foot length about 14.5 cmCN size 26(Inner foot length 15.8cm)=Fit foot length about 14.8 cmCN size 27(Inner foot length 16.3cm)=Fit foot length about 15.3 cmCN size 28(Inner foot length 17cm)=Fit foot length about 16 cmCN size 29(Inner foot length 17.7cm)=Fit foot length about 16.7 cmCN size 30(Inner foot length 18.5cm)=Fit foot length about 17.5cmCN size 31(Inner foot length 19cm)=Fit foot length about 18 cmCN size 32(Inner foot length 19.6cm)=Fit foot length about 18.6 cmCN size 33(Inner foot length 20.2cm)=Fit foot length about 19.2 cmCN size 34(Inner foot length 21cm)=Fit foot length about 20 cmCN size 35(Inner foot length 21.5cm)=Fit foot length about 20.5 cmCN size 36(Inner foot length 22cm)=Fit foot length about 21 cm