Very hard. I can feel the springs. Theres very little padding. Ive got Fibro and back issues, this made them worse. Its not medium firm its 1 up from laying on a bare floor. I reached out and got lame reply from many the mattress isnt fragile. I trusted revies sadly. Fragile Id say not, it could protect you from a tornado. The seam that looks like fabric topper isnt. It a very hard mattress and it kept me waking up in pain. Now I have to buy a topper same price ss mattress to make it sleep able...Im so mad