The benefits of the Keystone Fabrics Valanced and Remote Control Operated Outdoor Sun Shade are so plentiful, you'd never regret this purchase. For starters, this PVC-coated polyester shade provides up to 90% UV blockage so it offers a protective barrier against the sun's harmful rays. A shaded area also means cooler temps and who can argue against a refreshingly shaded outdoor space to rest? Used as an exterior solar shade, this item blocks the sun before it hits your window or patio which dramatically reduces heat build-up, fading of furniture, ...