I was worried that a mattress shipped in a box was not going to be supportive but the Wave Hybrid was just as supportive as my old top of the line box spring mattress. I'm 6'0 ft 220lbs and I'm happy with the Wave Hybrid. It's not warm like other memory foam mattress. My wife is half my weight and happy with mattress as well. I'm a stomach and back sleeper. She's a side sleeper. All sleeping positions supported.