Instruct: Classify Amazon reviews into positive or negative sentiment
Query: SHARP EDGES!

(NOTE: My review is about the smaller 50-pc set of this series.) I just bought this set at a retail store today, intending to supplement an older set of blocks that I had growing up that my kids are now using. Having always had positive experiences with Imaginarium products, I was expecting good quality from this set of blocks. My son and I opened it a few minutes ago, and the blocks are brightly colored and nicely sized...as to be expected from Imaginarium. However, we were quite disappointed to discover that the edges on these things are rather sharp! I compared them to my older set, then decided in a matter of minutes that they are potentially dangerous and will be returned to the store for a refund. I strongly recommend that you do not buy these, unless you have a lot of patience and a lot of sandpaper. Imaginarium, what a disappointment!