Features: Includes 18 men's shirt collar extension chains. There are 4 black, 4 white, 4 silver zinc alloy elastic collar extension chains, 3 black and 3 white plastic extension chains. Our neck button extension belt is designed in practical color, and you can choose the right neck extension button according to the color of your shirt. Add 1.27-2.54cm extra comfortable space for the neckline area of your formal shirt. With these dress shirt collar extenders, your tie is no longer tight, and you can breathe freely and feel all day. It only takes a few seconds to wrap the collar extension rings hole around the original button, helping you to fasten it easily without tightening your neck. Specifications: Color:White,Black Material: Plastic/resin Size:Approx.1.1x1.4cm/0.43x0.55in Quantity:18pcs Package Includes: 18x Buttons note: Please allow a little error on the size due to manual measurement. The color might exist slightly difference due to different displays.