Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Handy to have

I got tired of using frozen veggie pkgs. whenever I needed a cold pack, so I bought this. It is a good thing to have in the home as it can be used for heat or for cold. I gave it only 4 stars, because the opening is so small, it only takes tiny crushed ice pieces if you want to add them to cold water. It'd be better if it was large enough for ice cubes to fit through the opening. It's basically a simple, useful, old-fashioned hot water bottle. Since I have a latex allergy, I'm glad it is latex free.