My parents are using this mattress; I didn't believe it at first either. Later, my father's blood sugar dropped, I slept well, and my mother's back pain improved a lot. Later, he also bought me a bed. I was very tired after the last shift, and my varicose veins improved a lot in three months, so this product is really good, not a lie. Don't talk nonsense if you haven't touched it, only those who have used it have the right to speak; ; ;