concept is good, but where zipper is sewed to plastic tore the day I put it together. I should have put it together the day I got it but I bought it at the end of summer trying to prepare for cooler weather and set it aside. So when the weather is dropping to freezing I figured I'd better put it together and get my plants in it. Since it is past the return date, I'm seeing if the old reliable duct tape trick will hold it together.