PFC-Free water repellency treatment. Leather Working Group Gold-rated waterproof nubuck leather. Quick lace hook. Gusseted tongue. Recycled polyester materials in collar, mesh and laces. GORE-TEX footwear fabric with recycled textile. Molded PU sockliner derived from 50% soybean oil. Compression molded EVA midsole. Extended heel designed for smooth impact. Late stage Meta-Rocker. Vibram® Megagrip rubber with 5mm lugs. Spring Measurement 34x29mm. Volume 498.00cm3. Weight 12.00oz. Heel to toe drop 6.00mm.