Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Poor design limits function

This foam rubber ring cushion is designed with the top side having an "egg-crate" surface. What this means is that the top surface has large "holes" in it, much like an egg carton has holes for the eggs. In effect, the cushion has much less foam than it should have, and it compresses too easily when the user sits on it. It does not provide sufficient support for people who need to use such cushions. What's more, this "design feature" isn't mentioned in the product description, so purchasers don't learn about it until the pillow arrives and they sit on it for the first time. DON'T BUY THIS ITEM!!!Duro-Med 18 Convoluted Foam Ring Cushion, Navy