In the characteristic, the maximum load weight and hardness are overestimated. And looked at the description on several sites. The mattress is not medium firmness, but soft. This was confirmed by the manufacturer's manager. I contacted them about replacing it with another more expensive model, but after thinking, I did not contact this manufacturer further. I gave it to my niece. My 66 kg fell into the pit on the third night of use. Used for two weeks, had to turn daily. It fades instantly. Suitable only for children and teenagers, it is better - on the second floor of a bunk bed. You can not sit on it - they will deform.