Built to be thin, lightweight, and long-lasting, so once you insert these new knee pads in your double-front work pants, you can keep them in all day, every day - even run through at least 50 wash and dry cycles without taking them out or worrying about them wearing out. So, if you depend on your knees to do your job. You can count on Carhartt knee pads to have your back. | Carhartt Knee Pads in Black | Size Medium