Weather Shields, Smoked suits Chev 2500 (2014-2019) by AVSThe Ventvisor, also referred to as a side window deflector, window shade or rain guard, allows fresh air to naturally circulate through open windows while keeping the rain out. Additionally, the product keeps the sun out of your eyes, enables fresh air circulation to eliminate stale, smoky air and allows you to keep your window cracked while parked, keeping the interior cooler. Now, you can truly enjoy the fresh air and whatever nature sends your way!