It's the iconic clog that started a comfort revolution around the world. The irreverent go-to comfort shoe that you're sure to fall deeper in love with day after day. Crocs Classic Clogs offer lightweight Iconic Crocs Comfort. All Crocs shoes are uniquely designed and manufactured using our proprietary 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 love. Heat: do not expose your Crocs shoes to extreme heat or intense sunlight for an extended period of time. Due to the unique nature of the Crocs PCCR material, high temperatures may cause them to warp. Crocs shoes should solely be hand washed. If the model features a lining, it is recommended to put the lining in a mesh fabric or use a delicate cycle (of up to 30 °) if you machine wash. Cleaning your Crocs using the washing machine is at your own risk Looking for the ultimate warm-weather shoe? Crocs' Classic clog has a ventilated upper and a traction outsole to make it a top wet-dry performer--perfect for the beach--but we can think of a zillion other places you'll want to wear it.