16.5' Triangle Outdoor Sun Shade Sail Canopy Green Polyethylene Fabric Material w/ Rope Carrying Bag UV Block Portable for Patio Lawn Yard Garden Swimming Pool Spa Spacious and stylish Triangle Sun Shading Sail with knitted high-density polyethylene (PE) fabric Durable UV blocking & mildew and mold free Portable, light weight and easy storage - Conveniently foldable design Environmental temperature below the shading sail can be lowered down to 6.5 degrees centigrade! Ideal for relaxation, reading, picnic, etc. in outdoor patio, lawn, yard, swimming pool, spa and etc.