The Twin XL Wave Hybrid Mattresses, along with the premium adjustable base, are exactly what we were anticipating they would be. My wife and I can each adjust our beds without bothering each other at night. Both of us find the mattresses much more comfortable than our previous king size mattress which also had a foam topper. I can adjust my bed to the contour shape I enjoy from my recliner which I need for sleeping on my back since having hip replacement surgery.The company that did the delivery and set-up was professional and efficient and fully explained the basic functions to us before they left.