I call it a fall/winter jacket, even though there isn't anything fall or winter-y about it. First of all, my daughter gets hot in just about anything she wears. A wool, or any heavy weight material for that matter, would never work for this little oven=) Secondly, I've never been a fan of color and season rules. I believe that if you want to wear linen in the winter, then you should be able to wear it in peace. If you want to wear white in the fall, then so be it. And if I want to make a fall jacket out of light weight cotton fabric with summery happy colors, then by golly I will. But don't pair it up with Bermuda shorts and crocks. Right? I mean....because... that would look tacky.