These baby sleep sacs are wonderful. You no longer have to worry about your little bundle of joy kicking their covers off. Simply put them in their sleepers and zip them in. The zipper is sewn in upside down so that when you do it up you don't have to worry about catching their poor chins and makes for easy night time diaper changes. The size is small which fits from NB to almost 9 months depending upon the size of your little one. It comes in pink blue yellow and purple. Please state which colour you would like.