Was not comfortable at all. When laying on it, I felt like I couldnt move and was sinking. I'm tiny, only 5'1" and 109lbs, age 30, female. I wouldn't expect to be sinking with my below average weight.
My friend bought a full size topper a few yrs. ago and it is sooo comfortable, so I bought a twin expecting the same comfort. Mine is much softer than I expected...too soft! So I'm disappointed.