3'' no 2 1/2'' more like it, comfortable YES YES YES it's worth the perches if you don't like your current beds softness or height. I can also say I love the warmth it provides. it does take 2 to 3 days to fluff after you take it out of the box, it does smell funny for about a day. You will see a difference and feel a difference from the firs day on your bed.