Knee protectors for work in the kneeling position.Type 1: Knee protectors independent of other clothing and that fasten around the leg.
Type 2: Knee protectors made of foam plastic or other padding material to be placed in pockets on trouser legs, or permanently attached to trousers.
Type 3: Knee protectors that are not attached to the body, but put in place as the user moves around.
Type 4: Knee protectors for one or both knees, which are parts of devices with additional functions such as a frame to aid standing up, or a kneeling seat.
