IN-CHANNEL VENT SHADE WINDOW VISOR 02-06 CHEVY TRAILBLAZER EXT/GMC ENVOY XL XUV Application:2002-2006 GMC Envoy XL Models, 2004-2005 GMC Envoy XUV Models, 2002-2006 Chevy TrailBlazer EXT Models Allows fresh air in while keeping, rain, wind, and drafts out Made Of High Quality Reinforced Acrylic With Light Weight Design, UV-Resistant The deflectors are designed optically transparent with safety in mind, to minimize blind spots for the driver. Easy to install with included 3M adhesive, no drilling required