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) 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. International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.