delivery was good. we Let mattreess lay flat for 72 hrs. as instructed.I researched as to what bed was best for fibromialga and spinal stinois, overwhelming it was a hybrid. This seems to be a great solution at a very reasonable price.  . The instructions say sleep on the mattress for 30 days to let your body get used to it. after 2 nights I already feel better. Thanks again Wayfair!