Here's the problem: Steel studs, cleats or screw heads are too hard--they skate down rock surfaces like fingernails on a blackboard. Felt wears out quickly, slides on mud and algae and can carry invasive species. Here's the solution: Our new Foot Tractor Wading Boots with next-generation aluminum bar technology. The new, more aggressively shaped aluminum bars are just hard enough to cut through algae and slime, yet soft enough to conform to rock surfaces. They also grip well on muddy trails, won't accumulate snow and don't hold moisture. In other words, they offer the wading traction we've been looking for all our lives. Made with fast-drying synthetic leather and Venergy monofilament mesh panels, Foot Tractors offer industrial-strength support and protection in a light, comfortable boot.