The 15 foot size of this umbrella is fantastic!  It provides so much shade.  It was easy to put together but one of the metal bars for the base was missing a rivet.  It didnt affect the functionality of the umbrella though and I am sure Wayfair will make it right when I contact them.  The fabric is water resistant but is thinner than the fabric on other market umbrellas I have purchased.  The one thing I dont like about this umbrella is the design of the base.  The instructions recommend pouring sand into two fabric bags that are then placed inside the metal base frame to provide stability.  The opening of these bags is small and difficult to pour sand in and then also closes with velcro!  The fabric bags are then covered by another thin piece of black fabric that hooks on the base frame.  The base looks very cheap and I am not sure how long it will last.