20' x 16' Sun Shade Sail Rectangle Sail Shade Canopy for Outdoor Patio Deck Yard, SandPREMIUM MATERIALS: Made of high quality polyethylene fabric weave cloth (185 gsm) with refractive index, this sun shade sail will keep you cool and enjoy your time. VERSATILE HANGING OPTIONS: With 4 durable D rings at each corner, hanging up this shade is a breeze. Simply anchor the four corners to attach and lounge in the shade in no time. EASY STORAGE & TRANSPORT: The polyethylene fabric weave allows you to easily fold the shade canopy down to a