Athletes can perform two separate exercises to strengthen their knees, thighs and hamstrings with this Plate-Loaded Leg Extension/Curl Machine. Whether performing leg extensions in an upright position or leg curls in the prone position, muscles will be properly isolated thanks to the split-pad design. Users can remain comfortable and free from distractions during intense training sessions on the high-density foam pads, which are covered with marine-grade vinyl for easy cleaning of sweat after each use.