Propper Men's Series 100 8" Boot Nylon Rubber sole FREE fit inserts included to help achieve a precision fit, AR 670-1 compliant flesh-out cattle hide upper (coyote only) Polishable full grain leather (black only) with 1000D nylon upper, Durable, coated, speed lace hardware with 550 paracord lacing Washable open cell foam inserts contour to your foot for weight distribution and arch support, Oil- and slip-resistant rubber outsole for excellent traction and impact absorption Open cell air mesh foam provides full foot air circulation for maximum comfort, Anti-microbial breathable lining prevents odor and extends the life of the boot Fast-rope compatible arch design resists wear from ladders and fast-roping, Ortholite sock liner for comfort