Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Slides down

I can't recommend this product because it doesn't stay in place, slides down out of position. I originally ordered a medium since my knee measurement just barely fell into the medium sizing. I really liked the fabric and comfort, but it wouldn't stay put. Therefore, I ordered the small. Tighter fit but it still slides down somewhat. Too bad. The fabric on this product is much better than neoprene as it's much cooler, breaths, and doesn't bind up in the back of the knee as much.