Timberland PRO Radius Knit Composite Safety Toe Slip-On Work Shoe Men’s Size 13 Anti-Fatigue Technology: A comfort system designed with shock-absorbing, geometrical technology that returns energy back to the foot to deliver all-day support and comfort. HoverSpring: proprietary lightweight HoverSpring foam provides industry leading underfoot comfort and flexibility while being durable enough for the harshest environments. Composite Safety Toe: Lightweight, non-metallic, asymmetrical-shaped toe cap meets US and Canadian safety standards including ASTM F2412-18a and ASTM F2413-18 I and C impact and compression safety standards and CAN/CSA-Z195-14 Grade 1. Timberland PRO FLEX: Timberland PRO FLEX technology gives you full range of motion without resistance, features like anatomically positioned flex grooves under your foot and durable fabrics that stretch above your foot ensure your shoes will work with you in every step. Electrical Hazard Protection: Provides secondary underfoot protection against live electrical circuits, electrically energized conductors, parts or apparatus, meets standards. Don't let the comfort and convenience of these slip-on work shoes fool you. They're as tough as your job site demands, with composite safety toes, electrical hazard protection, a lightweight HoverSpring foam midsole, and a comfortable stretch lacing system that locks your feet in place Excellent Pre-Owned Condition