Naturalizer Optimus - Women's Motocross Boots : Dark Chestnut Stud Suede : Elegant edge. The Naturalizer Optimus moto boot with a studded leather strap delivers sleek street style. This mid-calf boot blends rugged Western charm with modern comfort, featuring bold buckles and classic stitching across a leather upper with a rounded toe. A zippered side closure ensures easy wear, while Contour+ Comfort technology delivers a premium fit with responsive cushioning for all-day support. ; Polyurethane lining and foam insole. ; Stacked block heel. ; Synthetic rubber outsole. ; Imported. Measurements: ; Heel Height: 1 3 8 in ; Weight: 8.48 oz ; Circumference: 11 7 12 in ; Product measurements were taken using size 7, width M (B). Please note that measurements may vary by size. | Naturalizer Optimus Women's Motocross Boots Dark Chestnut Stud Suede : 9 M (B), Leather