Other features include rubber randing for added durability in toes and heels, Nylon Speed Lacing System, and full neoprene lining for comfort and warmth.CleanStreamâ„¢ designAbrasion-resistant and water-repellent synthetic uppersMinimized water absorption and wet-weightStreamTreadâ„¢ outsolesRubber randing for added durability in toes and heelsNylon Speed Lacing SystemFull neoprene lining for comfort and