The Timberland Powertrain Sport delivers athletic styling with enhanced protection. The boot features internal metatarsal guards and alloy safety toes, breathable mesh linings, electrical hazard protection, and anti-fatigue technology come together for the ultimate in low-profile comfort and protection. Outside the premium ripstop nylon non-mutilating uppers provide additional protection and inside the fiberglass shank gives structural support. The anatomically shaped, open-cell polyurethane met guard helps to protect against drops on top of your feet. The sole is made of a dual-density polyurethane and is oil resistant per SATRA TM63, heat resistant up to 248 degrees Fahrenheit and resist abrasion as well.