70% shade allows 30% light transmission. The 70% shading factor and maximum cooling ability of Aluminet makes this the perfect solution for shading both greenhouses and all types of pet or animal enclosures. Aluminet is a special knitted screen made from metalized HDPE giving the fiber durability and longevity. These properties allow Aluminet to function like a mirror during hot days as its unique aluminized fibers reflect unwanted sunlight and heat from your greenhouse. These same properties also serve to retain valuable heat during the cooler nights.