Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Good Workout Mat!

The Harbinger 340100 Durafoam Exercise Mat is a great Mat. I specifically use it for INSANITY floor workouts, and it has been great, soft on the knees and feet. Although the product slips a little bit on carpet, for the price, you cannot beat it. Thanks seller. You're doing a great job!