Crocs Bistro clogs have revolutionary Crocs Lock tread for slip resistance and an enclosed design to help protect foot from kitchen spills. These Crocs are designed to have no pressure points, making them ideal for people who are on their feet all day and need light comfortable shoes. 630g. Croslite material. Slip-resistant Crocs lock tread. Even effective on wet, soapy, oily and greasy surfaces. CE marked. EN ISO 20347:2012, OB, SRC. Crocs Lock¿ SRC slip-resistant tread.