Terrible umbrella. Flimsy and impossible to control. It shifts position in the slightest breeze. The knobs that are supposed to tighten it do not work. The frame is thin. The joints are all plastic. I’m wondering if it’s defective but I have a suspicion all these are the same. I’m still waiting for Wayfair to get back to be regarding a refundreturn. Just awful. DO NOT BUY.