Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not worth it.

I bought this product to give me some relief from feet aches from standing at a tall desk, but it does very little for that. I think most people would get more benefit from a cheap drugstore shoe insert.The product looks and feels quite cheap. It seems to just be extruded 'PVC sponge', and the two ends on the sides seem to be mechanically cut, not "4 sides beveled and sealed". If you stand on it for more than a minute, you can see indentations where your shoes/feet were, and they take quite a while to disappear. I think standing on mousepads would give you more relief.I will be continuing to shop for a better solution.