Fishing environments can throw plenty of obstacles at your feet. And Simms recognizes that a performance shoe, just like your boots, must keep pace with these blistering underfoot demands. The Riprap has a casual look and feel, but it's ready to dodge, weave, and punch back thanks to wading boot technology. Features: Simms' exclusive StreamTread soles featuring Vibram Idrogrip rubber wading outsole Innovative TPU heel drains Non-absorbent synthetic waterproof leather construction and perforated upper materials for quick draining and drying Anti-odor, quick-dry, cushioned EVA footbed Quick-pull lace for slip on/off convenience and reliable security Fully enclosed design to keep out debris Perforated foam construction for comfortable wear Offered in men's whole sizes: 8-13; Half-sizes 9.5, 10.5, 11.5; width: D Features CleanStream technology along with our StreamTread traction sole with Vibram Idrogrip 360 traction lug sole. Accommodates Simms studs & cleats Sizing: Simms recommends selecting boots that are one size larger than your street shoe size The streamtread sole featuring Vibram technology is exclusive to Simms. Co-developed with Vibram - the leader in sole technology, streamtread provides two distinct advantages compared to other soles. one is a patented 360-degree lug pattern that cuts through moss and mud. the second is a proprietary mix of rubber compounds that offer super grippy traction, are extremely easy to clean and ensure that the boots don't collect a lot of debris. Vibram soles are built from the bottom up and are designed to overcome very specific obstacles on a variety of terrains. Vibram invests heavily in research and development of products never overlooking even the most minute detail.