Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Measure the distance around your knee before buying

Length:: 3:03 MinsThis is a very well constructed product. The thick gel is and foam is VERY comfortable. The pads are designed to easily take on and off with Velcro, the Velcro is nice and wide to keep from digging into the back of your leg which is an experience I have had in the past with other knee pads. Another problem that I have had with the other brand of knee pads is them falling down my leg while I'm standing or walking. The design of these knee pads have solved that problem.The one issue that I have with them is that circumference of my leg at the knee is 15 inches. The Velcro just does not have enough contact area to make a strong hold, it is because of this I am going to see if they can trade me for a smaller size. I'm an average sized man so I'm sure that a smaller size is available, I just need to find the correct person to contact for exchange.I suggest buying this if your leg is not at least minimum 16 inches around it.