The most popular fabric used to create Covercraft custom car covers is called EVOLUTION. That popularity is due to its versatility, providing excellent protection in both indoor and outdoor situations. Manufactured in the USA by Kimberly-Clark, EVOLUTION car covers carry the highest UPF rating against harmful UV rays, and can stand up to the worst Mother Nature dishes out! Plus, the four-layer thickness absorbs impacts, helping to protect against nicks, chips, scratches and dents. The outer layer color is available in Blue, Gray or Tan. EVOLUTION car covers made from Polypropylene fibers bonded into the four-layer non-woven finish, providing both softness and strength, with a soft inner liner against your paint. This multi-layer design provides not only protection against seriously inclement weather, but also from tree sap, bird droppings and industrial pollutants like acid rain. Its a material suit of armor that breathes, allowing moisture, condensation and heat to escape, while supplying maximum UV protection for your paint and interior. Covercraft has manufactured EVOLUTION car covers for over 25-years, and there are more than 1-million covers in use around the world. Our most popular custom cover fabric..... Technalon covers, made with Kimberly-Clark's Evolution 4-layer non-woven polypropylene fabric, provide maximum protection in all weather conditions.  Often imitated, but never equaled, U.S. made Evolution fabric covers are used by millions of satisfied car enthusiasts around the world.  Recent improvements include a stronger outer layer and softer inner layer.  The inner layer is constructed with similar processes used for our Dustop interior storage covers - gentle protection for fine paint finishes (inner layer is now light gray).  Through extensive testing in Florida K-C has confirmed Evolution has the highest UPF rating of all their non-woven fabrics.  This is important because UV rays are what damage both the exterior AND interior of any vehicle.  Block the UV rays - protect the vehicle!