dd1 used a grobag until 22 months, we stopped using it when she found her way out of it, a real pain at nap times, we moved to one with feet, she loved them, fleece with pretty prints, since she has moved to a bed we have added a blanket and pillow and a side rail, she real love all of it, for us it is when can we get rid of it completely, we do not use it for naps anymore, lucky we have warmer weather, it is still unfortunately part of the night time routine, she is 26 months was always an adventours sleeper in the cot, calmed down heaps in the bed but still adventours on occasions