15" high black upper with composite safety toe and black cleated outsole. Composite safety toe meets ASTM F2413 M I/75 C/75 EH* and will not set-off metal detectors. Cleated outsole spits out debris for grip on indoor and outdoor surfaces. Durable, seamless upper is 100% liquid proof. Slip-Resistant, nitrile rubber outsole provides superior grip on dry, wet and contaminated surfaces. Tiny air bubbles trapped within the material keep feet warm in the cold and cooler in the heat. Aerex 1.5.5 is anti-fatigue: studies show that every pound reduced in footwearweight is like 5 pounds off your back and 5% less energy expended. Calf-Relief Topline (CRT) is not only stylish, it provides easier on and off and roomier calf space. Beveled heel for reduced back and leg strain. Tread wear indicators to show when half the tread has worn away.