Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Product Changed - Disregard previous reviews!

Purchased mats for their "easy peel and stick backing". After peeling paper off, noticed there was no "sticky" backing whatsoever. Called seller who told me to buy double sided tape to secure them to stairs. Told them this was ridiculous, since the description clearly states they have a sticky backing. Was told by seller the manufacturer changed the backing and they are no longer sticky. These mats look nice and sturdy, but if you are looking for a sticky back, these are not for you. Had to fight for a shipping refund due to false description. Amazon should make seller revise description.