Seamless Drylock ankle seals and a flexible, lightweight sole. Drylock series boots are 100% blindstitched, which means a more watertight construction since no stitching fully penetrates through the neoprene. Taitex sealed seams plus Pressure Bonded Velcro straps and pull loops. Thermo Carbon lining and Ultra Stretch neoprene ankle panels. Velcro cinches across the insteps help provide a secure fit. Solid sole underneath the split toe, which means no annoying leash hangups.