The Knee RX Kneeling Mat from SMG provides ergonomic support for workers whose jobs require them to frequently kneel. Made from a nitrile/PVC foam blend for resistance to oils and greases, the mat reduces trauma, stress and strain on the knees and lower back. A heavy-duty version featuring a NoTrax“ surface is available.Superior Manufacturing Group, www.notrax.com , (800) 621-2802