Instruct: Classify Amazon reviews into positive or negative sentiment
Query: cups break easily

This product did a good job making yogurt. However, after I made my first batch, one of the cups shattered in my hands as I was opening it. As another reviewer said, I'm a small person, and I manage to use glass items all the time w/o breaking them, so I don't think it's me. I have returned this item and ordered a different yogurt maker. I would not recommend this item because the cups break so easily.