Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Solar, but not a fit!

I ordered this solar pool cover because my kid uses the pool all the time and sometimes complain that it's to cold. I figured a solar cover would keep it warm for them in mid afternoons, well when I got the pool cover I was so excited only to open the very nice zipped re-usable plastic bag it came in. I pulled it out and it was nothing more than a circular large plastic bubble. I wonder how can I use this? How does it stay on the pool? Do it just lay on top? To this day I still haven't figured it out! So, there it sits in my garage, a total waist of money!!!