This vest uses Thinsulate, which is thinner and more insulating than down. Features a YKK double zipper. Selling to organize my wardrobe. Shoulder width: 40cm Body width: 55cm Length: 65cm (measured from below the collar) Measurements are taken flat; please consider them as a general guide. Please note that I will not respond to price negotiations. Please refrain from purchasing if you are overly concerned about minor details, as this item has been stored at home. Please only consider purchasing if you are able to conduct a transaction with common sense. I prefer not to deal with those who cannot make immediate payment or provide a receipt evaluation within the day after the item arrives. For those paying at a convenience store, please refrain from purchasing if you cannot pay on the same day. I will cancel the transaction if payment takes too long. This is a used item, so there may be some minor scratches or stains. Returns are not accepted, including for reasons related to size. *Please note that this item is also listed on other sites, and may be canceled depending on the timing of the sale. *Shipping is not available on Wednesdays.