Length 170mm, height 240mm, width 95mm Ideal for work on concrete, hardwood floors and construction work High density foam padding with heavy duty cap to provide increased comfort Flexible straps keep the knee pads in place for comfortable all day use Wont roll, slip, mark or damage surfaces Tight support non-slip design keeps knee pads securely in place for all day comfort Specially shaped, rigid cover provides longer lasting outdoor use Elastic straps adapt to the user's body position One size fits all