Timberland® PRO™ Powertrain Sport work shoes with alloy safety toes, breathable mesh linings, electrical hazard PROtection and anti-fatigue technology come together for the ultimate in low-PROfile comfort and PROtection. The work shoes feature premium ripstop nylon uppers and lightweight, asymmetrical-shaped alloy safety toe caps for lightweight PROtection. With a mesh lining with antimicrobial treatment for odor control and comfortable feet. Fiberglass shank for structural support. Anti-fatigue technology absorbs shock and returns energy at key zones of the foot for comfort. Dual-density polyurethane outsoles are oil resistant per SATRA TM63, heat resistant up to 248 degrees Fahrenheit and resist abrasion. Meets ASTM F2413 I/75 and C/75 impact and compression and ASTM F2892 electrical hazard standards.