Instruct: Classify a review into positive or negative sentiment.
Query: Pain in the a**

This product is frustrating and difficult to assemble from beginning to end. I am very mechanically inclined so it's not me. The instructions suck & once the thing is installed properly, it doesn"t sit right on the box spring because of 4 protrusions on the bottom rails. With that being said, it was functioning ok for 3 weeks & then my 2-1/2 yr. old broke the zipper that holds the mesh to the sides with minimal effort. It is now in the back of his closet...