the pen is perfect. i needed a pen that would not take up too  much space. since you can adjust the size easily this pen works well. it was very easily to put together. the only time i need a screwdriver was for the door. it is the perfect size for either a small or medium size dog. it would not be good for a large strong dog. my dog is medium size and she doen't mind being in it. it is lightweight and you can move it around without any problems. you can't find a pet pen for this price point in the pet stores.