The Mae Safety Boot features a waterproof full-grain leather upper and a rear pull tab for easy on and off. It provides protection with a steel toe and puncture-resistant outsole. The boot is constructed with a WP Full Grain Leather upper, soft and breathable nylon mesh lining, and a soft, breathable nylon mesh sock lining. It has a durable rubber outsole for traction and a cement construction. Upper: Leather; Lining: Nylon mesh; Sole: Rubber. Heel Height: 2.0 cm. Safety Standard: EN ISO 20345:2011. Safety Rating: S3. Safety features: HRO WR SRA.