"Keeping the summer sun off the back of your head and neck, while letting you maintain good lines of sight to the rear, is the job of pickup rear window louvers like Willpak F-150 parts. The ABS plastic material stands up to all kinds of use and abuse. The design shades the interior to prevent overheating, protect upholstery from UV damage, and shield the pickup's occupants from the heat and glare of the sunlight. With a black color and textured finish, Willpak's louvers look snappy already, but are fully paintable in case you want to color them to match your truck's overall tint. Designed for easy installation without modification, these window components are made with superior quality in mind both in terms of material and usefulness. "