We have a hard (firm) mattress DH picked out for his back. Even so I have trouble rolling over, swear cotton undies stick like velcro to cotton sheets and down quit and piecemeal quilt (needed in the winter cold here) are heavy to me. I fear therapudic will be too warm ( In summer I hate A/C at night, depend on ceiling fan and open window) but dislike HARD mattress. DD swears by down topper she has. I should borrow for a few nights.