my husband moved our Q sized mattress onto the frame & we both had a good nights rest! I then moved the frame into the guest bedroom, placed the 14" memory foam mattress on it & I just had to roll on it to give I try & words just can't describe how comfy it was. It's like it was made for any bed mattress in that unlike the old frames that just had 4-6 slats to support a mattress, this frame has many slats as can be seen in the product photo, & no, I am not a paid endorser, just a happy shopper.