Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not really Unisex

Well, I was hesitant about buying something that was Unisex and I was right. The sensor that goes around the torso doesn't fit me. I suppose I could tighten it till I can't breathe and then maybe it would read my heart rate but that isn't what I was looking for when I bought it. The sensor does work when I push it into position. If it were more flexible (the material the sensor is a part of) it might read my heart rate. So back this heart monitor will go. I will buy one specifically for women. For the record, I AM a thin person with a petite torso (although being pregnant my torso IS growing :) I didn't see a measurement that said if your torso around the sternum measures less than XX, this product is not for you. That would have been helpful.