Instruct: Classify a review into positive or negative sentiment.
Query: Flexible Rainbow Frisbee - Medium

Our Aussie is a Frisbee nut! We have tried many flying discs over the years and all of them are either too heavy, too hard or too flimsy for our dog. ONLY the Frisbee Brand Flexible Frisbee for dogs will do for us and our Aussie. She's serious about her game so we're serious about her equipment. NOTHING but the best for her, and this is the best. We absolutely will not use any other equipment for our girl. We love this size because it's perfect for her breed..about 40 pounds. Our girl is 10 years old and she has had many of these discs over the years. They're easy on her teeth, last a long time and throw nicely. There is NO substitute.