Whitewater Designs places extra reinforcement webbing on the inside corners where the arch strap attaches to the base - where the stress is greatest. Footcups allow rafters a stable place to put their feet, leaving their hands free for paddling. The boots closed end makes it impossible for a foot to slip through coming in handy when paddling with children. The boot is stitched to raft floor material and reinforced with 1 in poly webbing around the base and 1.5 in webbing over the arch.