【Vest-Style Juban with Salt-Serge Collar 1 Piece】 Easy, style-free Juban! Since the sides are not closed, you can adjust the collar opening to your liking. You can insert your own collar core into the collar. Dimensions (approx. cm) Width: 40 Length: 60 Quality Body: 100% Cotton Hanging Collar: 100% Polyester A great value 2-piece set is also available☆