You will also find UK and EU sizes in the tag once you receive your goods Heat: Do not expose Crocs shoes to extreme heat or intense sunlight for an extended period of time because the unique nature of the Crocs PCCR material means high temperatures may cause them to warp Make each pair unique: Customise your pair of Crocs with fun Jibbitz charms that can be inserted into the ventilation ports, so you can personalise them to your specific style Convenience: This lightweight design causes no fuss thanks to non-marking soles and the convenient, easy-to-clean exterior; any muck washes off easily with just some simple soap and water