Kimberly-Clark developed BLOCK-IT 200 Series fabric to be a mid-price leader in quality and performance. It uses 3-layer polypropylene construction for moisture and dust resistance, and the fibers are treated for extra UV resistance. If you are looking for an inexpensive cover for indoor storage and limited outdoor use, this U.S. made fabric offers good, basic protection and is an excellent value. Lightweight - Easy to use and less bulky for compact storage Soft & Non-Abrasive - Will not scratch clean paint or clear-coat. Breathable - Allows moisture and condensation to evaporate. Moisture, Mold & UV Resistant - Polypropylene fibers are naturally moisture resistant and treated for extra UV protection. Good Dust Protection - When used indoors, keeps vehicle cleaner than most woven fabrics. Material color available - Gray