To keep your Robot Vacuum running at peak performance, Please maintain the brush guard every month( every 2 weeks in homes with pets) and replace it every 5-6 months. It is easy to be replaced and installed on your robot vacuums. Shipping with a brown box to prevent from being damaged in transit. The main body uses high-grade ABS material, according to the size, all-in-one molding, perfect compatibility. The ground contact area has a buffer made of high-quality rubber strips, which provides good ground cleaning effect while preventing scratches to the floor. Colour:yellow Material:plastic Package Contents: 2 x Sweeper brush cover Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.