I was unpleasantly surprised by how bouncy the hybrid mattress feels. This is NOT a firm mattress in the slightest, and not even a "hybrid" feel in my opinion. I literally can not feel the springs, only the give from the foam. My joints started hurting after the first week because I like to sleep on my side but my body sinks five- to six-inches when I lied down (I am 6'0 and 150lbs). And in the end, the Casper hybrid mattress costs more than an average quality non-foam mattress.
The mattress is short and sits very low as well as it stays warm.I was hoping for a cooler mattress with more support and long enough to keep my feet on the bed.