Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Reach everything/Extremely Versatile

I have used lacrosse balls, tennis balls, the knobbler and foam rollers of all sorts. This is simply the best way to reach every trigger point you have. I also find myself reaching for this more often than any of the others. It just works and it simply attracts attention. It practically demands to be used. And since trigger points only get better by massaging them regularly, I've achieved results with this much faster than the others. Great product.