We had a mattress that was about 4 years old. It was thick but had gotten soft and lumpy. Both my husband and I were having back/neck issues and trouble sleeping but didn’t make the connection. After getting this mattress that all changed! I was afraid the mattress was going to be too firm and for the first couple of nights it did feel that way. Around the third night of sleeping on it though it was perfect! It has the right amount of firmness that my back and neck needs! I sleep soundly now and my back and neck aren’t achy anymore. My husband doesn’t toss and turn all night either! If only we had gotten this mattress sooner!!