Asymmetrical XL steel safety toe Premium full-grain waterproof leather and non-waterproof styles Electrical Hazard Protection Heat, oil and slip-resistant rubber outsole Steel shank for structural support Metallic puncture resistant plate Anti-Fatigue technology polyurethane footbed for shock absorption and energy return Timberland PRO® rubber "double toe" and rubber backstay Dual-purpose top hardware for lacing customization Breathable and moisture-wicking lining with anti-microbial treatment for odor control Cement construction for flexibility 30-Day Comfort Guarantee