Rolled out under a treadmill or spin bike, this 78-by-36-inch PVC mat puts a 0.25-inch buffer between heavy equipment and the floor underneath. The dense PVC sheet takes the shock of running strides and dampens the low rumble that travels through floorboards into the room below, so an early session stays quieter for everyone else in the house. It also blocks carpet fibers and floor dust from being pulled into belts, rollers and motor housings, which keeps the moving parts of a machine cleaner over the years. The surface is water resistant and non-slip, so sweat wipes off with a damp cloth and the mat stays where you put it during hard intervals. At 6.5 pounds it rolls up for storage between workouts, and the black finish hides the scuffs that come from dragging equipment across it.