I think it would fit a size 2T up to a size 6. The straps are adjustable and comfortable. Please see photos. 100% cotton and machine washable. Reversible design: cupcakes on one side and stripes and pockets on the other side. It's adorable! Message or text any time. Cash only please. I can meet at the Kaysville Library (Tuesdays or Fridays) or the South Weber Maverik. Please see my other ads. Thanks!