The mattress lasted half a year on one side and a couple of months on the other, then it became soft and not comfortable like foam rubber. Most importantly, he wrote to the manufacturer to change it under warranty, but as a result, during a month of disputes, he recorded a video, sent different photos on request, as a result, the Askona company refused to exchange the goods, explaining this as a normal phenomenon during operation. Do not get fooled by the manufacturer's warranty and their "quality"