Instruct: Classify the given review as either positive or negative.
Query: Muscle for those of us without any :)

I love this jar opener. I'd give it a 5, but it does occasionally slip off the jar (what opener doesn't?) and it does leave grooves in the lid at times. However, 9 times out of 10, it does an effortless job of opening even the toughest jars. I've even used it on plastic bottle tops for sticky Karo Syrup, and soda tops that have pressurized themselves onto the bottle. The positives far outweigh the negatives with this tool. It's size is great, too! It's able to accomodate small caps to large jar lids. I even catch my old jar opener (my husband!) using it once in a while :)