12 ft. / 3,7 m square shade sail - sea 230 gsm. The outdoor sun shade sails provide sun protection, innovative design and value. By mixing and matching more than one sun shade sail, you can create your own unique shade design to cover even larger areas. It is made out of 230 gsm breathable polyethylene long life fabric is UV stabilized inside and out. It has 1 year fabric warranty. It allows rain to pass through and water will not collect or pool.The reinforced stitched corners with steel fittings attach quick and easy to mounting points and basic install hardware kit includes install package for each connection point. Its innovative fabric design blocks 90% of harmful UVA and UVB rays yet is remarkably breathable, allowing air to circulate.