The Tough-Flex Knee Pad Sleeves from Klein Tools feature a slim, low-profile and unique, sleeve design that keep the knee pads close to your body and centered in place throughout the day. These sleeves feature a zipper to be put on and off easily while wearing work boots. The front of the sleeve is designed with a tough, flexible cap for agility and protection on the jobsite. Neoprene and EVA foam padding provides the ultimate comfort for all day kneeling comfort for any jobsite or weekend task that puts pressure on your knees.