CenturionTM kneepads feature 1/2 inch, high-density foam covered in durable CorduraTM nylon. Polyurethane thermoplastic non-slip caps fastened with color keyed grommets provide additional shock absorption and ensure long lasting wear. Dual hook and loop fastened 2" wide (5.1 cm) elastic straps with reinforced bar tacking provide a comfortable and secure fit for all sizes.