Full-grain leather upper with removeable comfort insole, 8" lace-up shaft, Nano composite toe, Oil- and slip-resisting rubber outsole, ASTM F2892 electrical hazard, Goodyear welt construction, Shaft flexes and expands for maximum comfort and ease as you put them on and ASE7 moves with you during entry, EVA midsole and ladder rung design for safety, Puncture resistant, Adaptive Stretch Engineering to adapt with movement, reduce shaft tension and ankle pressure, expand for maximum comfort, and reduce pressure when kneeling, squatting, or crouching,