This mattress is amazing! It's nice and firm and gives me so much back pain relief. I have always struggled to find a good mattress that isn't too soft or too stiff and this one is perfect. It's firm enough for me not to feel like I sink into the mattress itself and I actually feel like it gives me enough support as I'm a side sleeper. Plus, this mattress does not make me feel hot at night which is a biiiiig positive. Definitely will be purchasing this for the rest of my family.