Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Search for "Black yoga blocks" and save money

I've owned a pair of these before and they serve their purpose, but everybody knows these things are over priced for a couple pieces of foam. Try A/Bing them with a pair of black yoga blocks also available on Amazon. http://www.amazon.com/Milliard-Block-Beveled-Edges-Black/dp/B00994II5C/ They will do the same exact thing, and look just as good if not better for a lot less, and no one will know that you are using yoga blocks. They are made from very similar material. Don't say I never did you a favor. A pair of yoga blocks will also give you three different height options. They also come in cork for a few dollars more, which is kind of a cool look for your studio.Hugger Mugger Cork Yoga Block