Waterproof full-grain leather construction, 8" lace-up shaft, Composite toe, Shaft flexes and expands for maximum comfort and ease as you put them on and ASE7 moves with you during entry, Goodyear welt construction, Puncture resistant insole, ASTM F2892 electrical hazard standard, TPU and EVA non-marking outsole, Oil- and slip-resisting rubber outsole, ASE7 (Adaptive Stretch Engineering 7) technology that stretches and adapts for comfortable forward movement and reduces shaft tension and ankle pressure,