I bought 2 of the black umbrellas. I needed them to put down into my fence posts in my outside dog areas (6 big dogs).  The umbrellas far exceeded my expectations! I expect these to last for years!  I knew I needed olefin material and am so happy I chose that vs the more expensive type (Solefin I think). Thick material, heavy duty, well constructed, excellent sun protection, gives lots of shade for my fur babies when they are outside, and they are just gorgeous! I keep them secured with a bungee cord wrapped around and attached to the chain link fence. I put them up and down  every day with no problem!  I’m adding a photo and it will show you. Hope this helps! Ecstatic with product 100 percent and customer service, hands down, is the absolute best!