Replacement Pads for QB2 Supra-Aural Protection 50pr/box Replacement pads for supra-aural protection QB2 . Comes in polybag. NRR 25. Soft pods rest partially in the ear for a balance of comfort and protection. Patented band design prevents ear pods from touching dirty or contaminated surfaces. Lightweight and portable — designed especially for environments with intermittent noise hazards.