From the dock duties to running laps around the deck, the vulcanized-rubber Challenger 7" Boot sets the task-ready standard for guaranteed waterproof protection and comfort. Product Features: Vulcanized rubber outer with neoprene lining Simms proprietary rugged deck outsole provides grip and traction on all surfaces Simms Right-Angle footbed for all-day support Pull-on loop for easy don and doff. Product Specifications: Technology: Right Angle Footbed