I purchased this kennel last summer so our cats could enjoy being outside safely. We only leave it up during the summer months because it probably wouldn't withstand a Wisconsin winter.  It's easy to assemble but does need to be staked down and stakes are not included. The space along the bottom of the door is big enough for a small cat to crawl through but we solved this issue by cutting a pool noodle to fit. The tarp roof gives nice shade and is secured at each corner however an adventurous cat can crawl the panels and slip through. Mine only did this once when we first put it up and hasn't tried it again. That being said best to keep an eye on things. Would definitely purchase again.