WARM - Don't expose your Crocs shoes to extreme heat or intense sunlight for an extended period of time. Due to the unique nature of Crocs PCCR material, high temperatures can deform them All Crocs shoes are uniquely designed and manufactured using our exclusive closed-cell resin, Croslite, a technology that gives each pair of shoes the soft, comfortable, lightweight and non-marking qualities that Crocs wearers know and appreciate. Crocs shoes should only be washed by hand. If the model has a lining, it is recommended to put the liner in a mesh fabric or use a gentle cycle (up to 30°) if machine wash. Cleaning your Crocs using the washing machine is at your risk.