PAM® Puncture Resistant™ Insoles are dual layered 100% memory foam insoles that contain a flexible steel plate that protects from sharp objects like shards of glass, metals and nails. The steel plate is securely placed inside of the insole to prevent separation and is tested for penetration, puncture resistance and corrosion. Memory foam compresses for safe clearance in steel toe footwear. Ergonomically designed by a Podiatrist with a deep heel cup and soft contoured arch support. Made with a heavy-duty top cloth with anti-fungal, anti-bacterial, anti-perspiration Silver Ion Technology. Ideal for contractors, construction and renovation environments. Meets and exceeds ASTM F2413-11 standard.