Thank you for viewing! Wire is inserted in part of the collar and from the first button to the second button (for collar fixation). - Brand: SEVENDAYS=SUNDAY - Size: M - Design: Checkered pattern - Color: Black, White - Sleeve Length: Three-quarter sleeves - Material: 88% Cotton, 12% Linen Shoulder width / Body width / Sleeve length / Length Shoulder width: 41cm Body width: 53cm Sleeve length: 46cm Length: 65cm Please understand there may be slight variations. This is a used item, and it will be inspected by an amateur, so there may be oversights regarding scratches or stains. Please understand. We will ship in the most compact packaging. Please ask any questions you may have before purchasing.