We live in the desert and while umbrellas are great, sun sails work much better for a semi permanent source of shade. This sail is well constructed with heavy duty material and D hooks. While I did not have time to install poles I am confident this sail will be perfect for my need for shade. 

TIP: Invest in quality steel or wood cemented in poles to fit your shade as the shades themselves do not last forever, so order a common size and shape. Also consider colour, once they get soiled from dust and water pooling you'll end up living with it. Colours fade.