Features: 1. Collar Extenders for Mens Shirts: Due to the fluctuation of weight, many other parts of favorite formal shirts fit well, but the collar of the shirt will be very tight after being buttoned, which makes it difficult to breathe after wearing a necktie. This tie collar extender can easily solve this problem, and there is no need to spend money on a new shirt, just install a button extender on the top button of the shirt to extend the neckline, which is very economical. 2. Shirt Collar Extender by 1 inch: which adds an extra 1/2-1 inch of comfortable space to the neckline area of your formal shirt. With these dress shirt collar extender, your tie is no longer tight, you can breathe freely and feel comfortable all day. 3. Simple and Beautiful: It only takes a few seconds to wrap the collar extension loop hole around the original button, which helps you to fasten your tie easily without tightening your neck. The shirt collar stretcher is hidden under the tie, so you can't see the secret under the tie at all. With the button for shirt collar, the shirt you like but don't feel good about wearing finally fits perfectly. 4. Package Included: 18 x Shirt Collar Button Extender (4 x Black Zinc Alloy + 4 x White Zinc Alloy + 4 x Silver Zinc Alloy + 3 x Black Plastic + 3 x White Plastic). Specification: Material: Zinc Alloy, Plastic Product Color: Black, White, Silver Product Size: 10 x 25.5mm Product Weight: 25g Package Included: 18 x Shirt Collar Button Extender (4 x Black Zinc Alloy + 4 x White Zinc Alloy + 4 x Silver Zinc Alloy + 3 x Black Plastic + 3 x White Plastic)