Certified for a chain speed threshold of 3000 feet per minute; exceeds F3325 standard. Protection: blend of nylon, polyester, and Kevlar (6 ply), 26 inches in the front and 12 inches in the back. Polyester/cotton outer with leg zipper closures. Meets CSA Class 2, Level 2 standard for reflective clothing. Glass button braces inside the waist. Right leg pocket, sawdust-proof pockets. Standard waist size, two sizes per pair