I purchased this here and wore it about three times. The short sleeve part is made of sweatshirt material. You can wear it in the winter by pairing it with a thin long-sleeved T-shirt or Heattech! It's a very stylish and cute item♡ * There is no size tag from the time of purchase, but it is said to be size 120. * This is a used item. Please refrain from purchasing if you are looking for perfection.