Packed with features, the Velocity XL Low SD+ Alloy Toe Work Shoe by Timberland PRO allows you to take on any outdoor activity head on. The exclusive Anti-Fatigue Technology in the multi-surface TPU outsole effectively absorbs shocks and returns energy to key zones to improve performance. Designed in accordance with ASTM electrical hazard standards and CSA requirements, this work boot provides excellent protection against shocks from live electric circuits. The cement construction reduces break-in time and provides flexibility, while the Bio-Suspension system offers improved cushioning, flexibility, and stability. Features TPU outsole with Anti-Fatigue Technology Electrical hazard protection: ASTM F2412-11, ASTM F2413-11, and ASTM F2892-11 standards Mesh linings with antimicrobial treatment Alloy safety toes with synthetic overlays Bio-Suspension system for cushioning and stability Meets CSA standards for shock resistance.