Pink Bicho sandals by Camper. The sandals have a leather upper. They have a round toe, a velcro closure at the front for easy on and off and a non-slip sole. – Upper: Leather– Lining: Leather– 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 (Foot Length): 17 = 98 – 103 mm18 = 104 – 110 mm19 = 111 – 117 mm20 = 118 – 123 mm21 = 124 – 130 mm22 = 130 – 137 mm23 = 138 – 143 mm24 = 144 – 150 mm25 = 151 – 157 mm26 = 158 – 163 mm27 = 164 – 170 mm28 = 171 – 177 mm29 = 178 – 183 mm30 = 184 – 190 mm31 = 191 – 197 mm32 = 198 – 203 mm33 = 204 – 210 mm34 = 211 – 217 mm35 = 218 – 223 mm36 = 224 – 230 mm37 = 231 – 237 mm38 = 238 – 243 mm