The F3 Stabilizer Knee Pad forms, fits and flexes to keep your knees protected during every job. The XL Patella Gel Zone combined with the 6 Layer Comfort System conforms to the shape of your knee for a custom fit. They also feature a Pillow Comfort Memory Foam and the support of 10 Power-flex Support Pads for added comfort. These knee pads also feature independent stabilizing feet that give you more stability but with less contact.