USMC certified with EGA. Durable, nu-buck leather upper with lightweight 1000 denier nylon. Breathable, moisture-wicking mesh lining in the HOT and Aviator ST. The GTX has a GORE-TEX waterproof, breathable lining. Speed lacing system, PU foot-bed, and fiberglass shank. Vibram 360 out-sole with Dri-Ice compound.  8" tall. Sizes 5-16 including half sizes. Regular and wide width.