Puma Rock S7S Heavy Duty Safety Boot Composite Toe Cap Size:7 and chemicals while maintaining slip and chemicals while maintaining slip resistance and ESD properties Memory Foam Insole Skechers signature cushioning adapts to your foot shape for personalized all day comfort O1 Occupational Rating Professional footwear standard with enclosed heel and antistatic properties for technical environments Lightweight Construction Engineered for reduced weight to minimize fatigue during long shifts in manufacturing facilities Breathable Mesh Upper Ventilated athletic mesh construction keeps feet cool in controlled clean room environments Clean Room Compatible ESD safe materials and construction suitable for electronics manufacturing and clean room use Flexible Athletic Sole Natural flexibility allows comfortable movement during precision assembly and technical work Relaxed Athletic Fit Roomy The side zip allows you to slip the boot on and off in seconds without unlacing Marking Code: FO (Fuel Oil Resistant) Tex® Waterproof Membrane