This is a super-soft organic cotton fabric that has a lot of stretch.  So much so, that we recommend ordering a size smaller than you think you need.  Babies and toddlers really need no larger than small or medium, and large works well on adults.  We cannot say enough about how soft and luscious this material is, you just want to cuddle with it!  And the bright baby blue color with small spring flowers is just as sweet as it could be.