I would recommend this raincoast even though it is not lined just a plastic poncho rain coat that snaps on the sides to fit like a coat.  You can put heavy clothing under it in the winter and also use it in the summer rains.  I wanted a lined one, but then I realized it would be too warm to wear in the spring and summer.  Works perfect and looks adorable on my 5 year old grandson and much room to grow.  Would recommend.