There are certain times of the day when the sun hits you "just so," creating hazardous driving conditions. Eliminate blind spots and increase safety instantly. These Cling-On Sun Glare Blockers minimize glare below your driver's visor without blocking out your view of the road. Just stick on the windshield. Can be trimmed to fit. Reusable and re-positionable. PVC. 11.75 inches x 3.5 inches. Set of 2.