Coverking's true Custom Sunshields are made-to-order specifically for your vehicle. Every pattern is designed specifically for your make, model, year, and options. We have no ‘one size fits all’ sun shields. Your windshield has been analyzed by Coverking engineers using state-of-the-art 3D scanning equipment. The custom pattern is tested for precise fit and durability. You are guaranteed a great fit with Coverking's Sunshield. You can safely roll up these materials. Coverking developed a special high-density foam that has excellent insulation properties and laminated it between two layers of Mylar. The outer layer is Mylar with an aluminized coating, which reflects virtually all UV rays. The inside layer is plain Mylar, which adds rigidity and protects the middle foam layer. These three layers work together to provide the best heat and UV reflection, insulate against heat, and withstand numerous rolling while maintaining rigidity to hold its shape while on the windshield.