Dee Zee Bed Mats - Helps prevent cargo from shifting and damaging your truck. Constructed from 3/8 in. (9. 52mm) thick rubber compound. Highly compressed rubber resists abrasions and tears. Rubber cleats help keep mat in place and facilitate water drainage. Will not crack, rust or break - even in extreme temperatures. Resists most chemical spills. Custom fit application contours around wheel wells.