The Brica Smart Shade blends into your car"s interior while maximizing top to bottom window shade coverage. The new, slim design mounts to the window sill and automatically rolls up with the window. The Smart Shade helps blocks the glare that kids really fuss about. It"s ready to use and easy to install. The Smart Shade Rolls up and down with most windows - you can block the glare or let in fresh air. It also helps filter harmful UV-A and UV-B rays. Installation is easy, the shade housing safely inserts between window and door panel and window attachment hooks secure over the top edge of window. Compatible with most vehicles and no tools required. Extra-wide for superior coverage, it measure 16.25" x 19.25" (41.2 x 48.8 cm). Includes one Smart Shade. Installations on some vehicles may not allow the shade to roll up and down with the window as window shapes, sizes and door panels vary.