Knitted shade cloth was designed in Australia using UV (ultraviolet) treated materials for long-lasting shading, as well as privacy screens to help create safe living spaces outdoors; for general-purpose garden and horticultural applications also. The unique construction of this material is designed to block harmful UV rays for better protection against heat and glare, while still filtering light for optimal growing conditions during summer. During winter months, the shade cloth protects against frost. It's industry leading 10 year warranty against fabric degradation provides peace of mind that this product will provide heat protection for many years. This material is sold in bulk sizes for horticultural and commercial uses.