Oakley Men&#39;s SI Assault Boot 8" W-M, Desert, 13 W US 100% Leather/Manmade Imported Synthetic sole Shaft measures approximately 8.5" from arch Heel measures approximately 1" Platform measures approximately 1" Soft temper for instant comfort no long break in period needed Athletically designed for superior performance agility and comfort Vibram high rubber soles maintain aggressive traction on all terrain for safe and comfortable maneuvering Moisture wicking liner and anti microbial treatment add to the comfort and durability of the boot Advanced polymer ethylene vinyl acetate and premium urethane offer resilient shock absorption for long term foot comfort and protection