BIG SIZE. Two panel allow to swivel, get more protection.nSAFTY. Allow good visibility through windows.nEASY TO INSTALL. Suction cup could keep the Blocker in position.nADJUSTABLE. Get two kind Sunblock Panel to offer three blocker choice.nUNIVERSAL. Suit for different place of window.nEasy to install, reduce glare from side and front window.