AVS invented the Ventvisor and offers the most vehicle coverage. The Original signature Ventvisor or side window deflector is precision-engineered for an exacting fit to the broadest range of vehicles on the market today. AVS Original Ventvisors customized design mounts in minutes to the outside of your vehicle using pre-applied 3M adhesive mounting tape applied above and around your windows. It's a quick no-drill installation to create a perfectly snug and secure fit. It's completely safe for car washes too! Keeps fresh air in and the rain out. The 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.