Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Handy for otr

I purchased this for my boyfriend. He is an otr truck driver and was complaining about living off of lunchables and snack food as food in in truck stops tends to be overpriced. Here is his review, "Overall its a good little thing, I let it heat the food for an hour and half to make sure its heated thoroughly and nice and hot. The one thing that could be better is the latch. It's not very sturdy feeling and is difficult to line up." which is why he gave it four stars.Bear in mind this is for precooked foods only.