3-LAYER INSULATED BLACKOUT DESIGN – Engineered with a reflective foil layer, thermal insulation core, and blackout backing to block sunlight, reduce heat buildup, and create a dark, comfortable interior for resting any time of day. CUSTOM FIT FOR PETERBILT 386 / 388 / 389 – Precisely tailored to match the window contours of these truck models, ensuring full coverage, tight sealing, and maximum protection against light leaks, UV exposure, and cabin overheating. ALL-SEASON TEMPERATURE CONTROL – Helps keep the cabin cooler in summer and warmer in winter by minimizing thermal transfer through the windshield and side windows. Perfect for OTR drivers who need reliable climate regulation inside the cab. ENHANCED PRIVACY & SECURITY – Provides complete blackout conditions, preventing visibility from outside and shielding your personal space, valuables, and sleeper area while parked at rest stops, loading docks, or overnight locations. DURABLE, EASY-TO-INSTALL CONSTRUCTION – Built with reinforced stitching, strong edging, and long-lasting materials designed for repeated use. Installs in seconds and folds compactly for convenient storage behind the seat or in any truck compartment. Experience superior cabin comfort and total privacy with this 3-Layer Insulated Blackout Sun Shield Window Cover, engineered exclusively to fit Peterbilt 386, 388, and 389 models. Designed for professional drivers who demand the highest level of interior protection, this premium window shield blocks sunlight, eliminates glare, and maintains a cooler cabin environment even during intense summer heat. The advanced three-layer construction combines a reflective foil exterior, thermal insulation core, and blackout fabric backing to significantly reduce temperature buildup, minimize UV exposure, and darken the cabin for restful sleep or added security while parked. Perfect for OTR drivers, team drivers, and anyone who frequently rests inside the truck, this blackout cover prevents light intrusion from street lamps, truck stops, and early morning sun—creating a comfortable sleeping environment day or night. The durable multi-layer material also provides impressive noise-dampening performance, helping reduce outside disturbances and improving rest quality during long hauls. Whether you're protecting your interior from fading or maintaining a consistent cabin temperature, this shield delivers reliable all-season performance. Featuring a custom-fit design tailored specifically to the unique window contours of the Peterbilt 386/388/389 series, installation is fast and secure using high-strength stitched edges and reinforced attachment points. When not in use, the shield folds compactly for easy storage behind the seat or in any compartment. Built to last, this product offers the perfect combination of durability, insulation efficiency, and blackout capability—making it an essential upgrade for any Peterbilt truck.