Was so very excited to try this Serta Perfect Sleeper mattress. My current mattress is over 15 years old. Wow, what a difference when you sleep on a plush well-made, high quality mattress. It is like a cloud, best night sleep. Kept me cool and my back pain is no more. It provides the right support for someone like me who likes to sleep on their side and back. I just love it, cannot wait until bedtime. Hope to have this mattress for the next 20 years!