Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Only lasts for about 30 days

I bought these skates and have skated about 2 hours a week for the first month I've owned them. Now the wheels locked up and I had to replace them. If you are going to skate occasionally, then these might be good skates for you. Or if you are a beginner and don't want to rent skates, these might be good skates for you. But if you are going to skate regularly, don't buy these as they won't last long.