These Mudpie vests are a great medium weight (don't let the 'Puffer' in the title scare you!) Perfect to layer over a sweater like Karlee or Shaefer or a cute flannel button up as shown on the mannequin. Vests are a great way to get through these days of fall when we seem to experience every single type of weather from the time we leave the house in the morning until we go home for evening - don't you just love Erie weather?! True to size. Karlee is wearing a medium and Shaefer is wearing a small.