There is nothing worse than putting on a respirator that has old dried on perspiration and body oils, especially if it's someone else's. Use these pads as a safe and easy method for to wipe clean and sanitize your respirator before each use. Our Alcohol-Free towelettes are individually packaged and measures 5" x 8" and contains the active ingredient Benzalkonium Chloride, which will not harm even the most sensitive silicone and rubber facepieces. The towelettes come packaged 100 per box. Our Alcohol Based, individually foil-packaged towelettes measures 5" x 8" and contain 70% Isopropanol and are designed specifically for rubber respirator facepieces and other personal safety equipment. The towelettes come packaged 100 per box.