Black Spirit Ankle winter boots by Superfit. The winter boots have a warm lining. – Soft suede upper.– Removable insole.– Flexible, lightweight non-slip soles.– Faux fur trim.– Zip closure at the inside.– GORE-TEX® waterproof membrane keeps feet dry in breathable comfort.– Upper: Leather– Lining: Textiles– Sole: Other Materials.– Please note that when you purchase shoes for your child, you should select a size that is 1.5 cm larger than your child’s foot. Wellies and boots should be up to 2 cm larger, for extra socks and insoles.Size Guide (Insole): 18 = 120 mm 19 = 126.6 mm 20 = 133.3 mm 21 = 140 mm 22 = 146.6 mm 23 = 153.3 mm 24 = 160 mm 25 = 166.6 mm 26 = 173.3 mm 27 = 180 mm 28 = 186.6 mm 29 = 193.3 mm 30 = 200 mm 31 = 206.6 mm 32 = 213.3 mm 33 = 220 mm 34 = 226.6 mm 35 = 233.3 mm 36 = 240 mm