Cool Friend@ Sun Shade Sail Uv Top Outdoor Canopy Patio Lawn Triangle (rust red, 16.5'x16.5'x22'11'') Blocks 89-92% of UV,Easy to install Sun shade can be used over a patio, driveway or other outdoor area to protect against UV rays Made of high-quality sun screen fabric, so it blocks up to 90% of harmful UV rays Sail comes finished with strong stitched seam, fitted stainless steel eyelets and nylon chords for easy hanging