The CLC 361 Ultraflex Non-Skid Pro Kneepads features an industry-leading Ultraflex Kneepad design that has a soft outer shell with an accordian-style upper cap, high density, closed-cell foam padding, and synthetic rubber straps. These features all combine for enhanced comfort when you need to complete a project that requires kneeling on material like marble and hardwood floors. Applications include Marble and Hardwood Floor Installers, Roofers, Electricians, Framers, Automotive and Marine Technicians and Plumbing Contractors.CLC Ultraflex upper cap design for comfort and protection. Soft, flexible outer shell protects and grips most surfaces without scratching or scuffing. High density, closed-cell foam for all-day comfort. Slot-n-Dot strap connections. Memory-Flex synthetic rubber straps. One size fits all.