Instant step-in comfort and excellent fit. Microfiber synthetic leather upper for superior comfort, fit, and durability. TPU shin plates, ankle, toe, and heel caps, burn guards, and calf guards are designed to provide coverage. The new, adjustable four-buckle closure system provides a comfortable, secure, locked-in fit. Air mesh lining provides comfort and breathability. Our exclusive Fox Positac rubber compound provides improved durability and unprecedented grip on the outsole. Re-soleable rubber outsole. Internal composite insole board provides stability and support from toe to heel and side to side on the pegs.