This 3-zone coil design works great for me as it delivers exceptional support. The mattress felt supportive no matter the position I was in. There was an initial cooling sensation for both me and hubby and it stayed relatively cool throughout the night. Also, we are both older and we found the edges sturdy enough to leverage getting in and out of bed quickly.
Overall, I am really happy with this mattress, and I look forward to many many nights of wonderful sleep.