Unique TS Transparent Sole with enhanced grip - like having the best wax ever. Seamless Drylock ankle seals and a extra flexible, lightweight sole. All Drylock boots are 100% blindstitched, which means a more watertight construction since no stitching fully penetrates through the neoprene. ThermoCarbon lining and UltraStretch neoprene ankle panels. Velcro cinches across the insteps help provide a secure fit.