MATERIAL: The sun shade sail is made of 185 gsm UV protected high density polyethylene (100%HDPE) shade fabric with strong stitched seam. With Durable Stainless Steel D-rings in each corner make the sun sails easily attached to any sturdy connection point to provide sun protection and personal design where you need it. UV BLOCKAGE: Protects from harmful UV rays and direct sunlight exposure. Blocks harmful rays of the sun without trapping hot air beneath. Fabric has high density breathable blockage, while effectively reducing heat, blocking up to 95% of UV rays, and protecting skin. BREATHABLE MATERIAL DESIGN: Allows cooling breezes and light to pass through for better airy and comfortable space, allows rains to pass through, so there's no pooling water( So it is not waterproof) MEASUREMENT & WARRANTY: Measurement is taken from D ring to D ring,leave 1.5 - 2 foot space for the hardware kit between shade sail D ring and mounting points,all edges are finished slightly curved so it can be stretched tightly. APPLICATION: Widely used for a patio, lawn, garden, pool, bbq areas,pond, deck, kailyard, courtyard, backyard, dooryard, park, carport, pergola, sandbox, driveway or other outdoor occasions. Size:8'x10'  |  Color:Sand Specification： Material: Made of 185GSM heavy duty HDPE fabric Size:10' x 13' Color:Sand Packaging includes：1 x shade sail Advantage:Up to 95% UV protection Installation Method: Install at a 20-40 degree angle with maximum tension to allow run-off Triangle Shade Sail: Choose two sides higher than another side To facilitate water flow in heavy rain and can extend use time Tips:  Temporarily remove your Shade Sail during storms and periods of strong winds. The hardware kit is NOT included in the package.