VENTVISOR® DEFLECTOR SET Leave windows partially open...rain or shine! Allows fresh air to circulate freely to prevent damaging heat buildup Dark-smoke-tinted acrylic deflectors are easy to install using 3M brand tape Acts as vent windows to vacuum out stale air and cigarette smoke. Ends window fogging and keeps parked cars cooler. High-impact, durable acrylic adds a striking look to newer vehicles. No drilling required. Helps block glare, wind gusts and rain for open-window driving comfort. High-style, functional vent/visors cover front and top part of window opening. Will never rust or corrode.