The Dunham MWN616 is part of the Contractor Series. It is a highly durable, waterproof, lightweight workboot with a sculpted interior that conforms to the foot. There is a full length, dual-layered removable insert composed of ABZORB® and compression molded EVA for added comfort and support. The slip resistant TRU-TRAK® rubber outsole passes ASTM F 16 77-96 Mark II machine standard for slip-resistance. Wheat Leather. These boots were the last to be produced in extra-wide (6E).