30 DURABLE QUALITY RESIN COLLAR STAYS - Cochic quality Thickness of 0.55 mm (0.02”) to keep your collars sharp and crisp all day long. Collar stays come in 3 different lengths. Choosing the correct collar stay is contingent on the shape and width of your dress shirt collar. If you prefer to receive more units of a specific length and receive fewer units of another one, please let us know with your order. We will be more than happy to accommodate your request! Selection of 3 Sizes: * Medium size: - 10 units of 2.24” x 0.47" (57x12mm)