https://www.manful.com/product/radi-cool-covers/double-circle-sunshade-car-windows-radicool-covers.html Cooling: Efficient radiative cooling, insulating solar energy. Environmental protection: No additional energy consumption. Reflection: Reflection, blocking sunlight. Self-Cleaning: Hydrophobic, oleophoic, antifouling, and easy-cleaning. Water resistance: The surface has Lotus Leaf Effect, and the fabric is impervious to water Dust resistance, easy-cleaning: Water-repellent and do not attract dust. Durability: High anti-ultraviolet, anti-aging.