KNOW NO SUBSTITUTE. The G.I. Temperate Weather 8" is built for the U.S. Military with durability as its focus. This boot features a waterproof and breathable GORE-TEX liner and a contoured polyurethane insole for additional comfort. Tread confidently knowing you are solid and stable on the Vibram 360 outsole. SPECIFICATIONS 8" height in men's size 9 regular Fleshout cattle hide leather / nylon upper Padded collar for added comfort Gusseted tongue to keep dirt and debris out Brass speed hook / eyelet lacing system maintains a snug and secure fit GORE-TEX waterproof / breathable liner Cushioned polyurethane insole provides comfort and is removable for airing and cleaning Direct attach polyurethane midsole for comfort and durability Custom-molded thermoplastic heel counter and toe box for instant comfort and lateral support Vibram 360 outsole: provides maximum traction on various terrains with substantial edging capabilities for braking, push-off, and stability, meets the ASTM F489-96 test for slip resistance