My husband and I slept on a Spring Air BackSupporter for nearly 8 years. When I made this purchase I was pleased with the claim to support the back. I personally found this a great mattress in the beginning and over time we would flip it every 6 months to balance the materials in this mattress. It never sunk in nor lost ability to support, it just wore out over the years. My husbands feelings toward this mattress is totally positive and he didn't want to replace our SpringAir when we did. He does a lot of strenuous work and loved the way this mattress settled in, he said it had character and was more comfortable now then it was brand new. I suffer with lower back pain and needed a firmer mattress and this one had softened over the years. Our SpringAir is still being used now by a family member and they tell me it's the best nights rest they have ever had. I guess every mattress changes over time, and this one was good while it lasted. Comfort Comfortable to be a coil mattress, has a nice pillow top part on both sides. It's a comfortable bed for the money. Support Great support on the back when brand new, wears down over the years. But it's a minimum wear down, this is a very good quality mattress. Durability My mattress is over 10 years old and it's holding up well.