Sizing: Crocs use US sizing on the sole, with one-size conversion for UK sizes and two sizes for other Europe markets (see size chart below) (e.g., UK Men 5/EU 38-39 Men) What size should I buy? Crocs come in whole sizes only. If you typically wear a half size, we recommend you order a size up 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 Crocs flips flops: finally — a men's and women's flip flop that's as comfortable as the crocs classic clog. these adult flip flops are easy-to-wear, dry quickly, and can go anywhere Make each pair unique: Customise your pair of Crocs sandals with fun Jibbitz charms that can be inserted into the ventilation ports and create your own personalised Crocs style Introducing our new and improved Classic Sandals Collection! Building on bold simplicity and versatility, we’ve updated the products’ most important aspects: the fit, feel, and look.