Love these rompers! They are easy to get on and off, and easy to move out of the way for diaper changes. The 3m size is pretty roomy for my 9 lb baby, it should fit for some time. The bottom part is pretty loose and would be good for babies with chunky thighs. I like these better than the onesies that you have to pull over baby's head. So far they have held up to washing and the material seems fine, not rough.