Resolable Goodyear welt construction with reinforced toe stitch, 8" lace-up shaft with padded tongue and collar for improved fit, Oil, slip, and heat-resisting smooth rubber outsole, Oil and chemical-resisting dual layer PU midsole, Strong composite safety toe, Recessed lacing design with military-grade paracord lace, Built-in HAWX Heat Transfer System for increased airflow, Lightweight Primaloft Aerogel Insulating insole, Comfortable and breathable dual-density PU footbed, Smooth tread to prevent imprints on asphalt,