WEBKHOMO GEAR. 16x20 Feet Beige Rectangle Shade Sail - 90% Shade Protection - UV Block - Polyethylene Fabric - Ideal for Patio, Garden, Pool. 12. • Ideal for deck, garden, patio, backyard, entryway, pool and children's playing area. • Effective 95% UV blocking. • 185g/sq knitted high-density polyethylene fabric for food air circulation.