Instruct: Classify Amazon reviews into positive or negative sentiment
Query: foam roller from JCA Sales

Apparently not all foam rollers are created equal. If you want one for therapy or workout purposes, the one from JCA Sales isn't the one. Theirs has a very rough and fissured surface and at the same time appears to have inconsistent density and is kind of spongy in places. The ends are cut off rough and are unpleasant to handle. It works neither as a firm bolster nor as a softer support. With its poor surface, it is uncomfortable to use. This one is not at all like ones sold elsewhere (OPTP for example). It might be good cut up for packing materials; that's about it.