Removeable cap lets you customize your knee pads for smooth or rough surfaces
Soft, foam knee pads cushion your knees without the high price
These foam knee pads feature a tough, snap-on cover that creates a 2-in-1 knee pad for rough or smooth surfaces. For rough surfaces, use the no-rock cap, designed to suspend your knees off the work surface, for maximum comfort, protection and stability. Remove the cap when working on smooth surfaces, or for jobs that require greater side-to-side mobility. Imported.
2014 Master Catalog: Page 61