8 Piece Pullover Collar Extension Elasticated Metal Button Collar Extension for Shirt Dress Jacket, White and Black Package contains 8 collar button extensions, 4 in white and 4 in black. Button diameter: 10mm Constructed from high-quality metal, these button extenders are durable and stretch to fit your needs for maximum comfort. Simply slip our extensions over your shirt or pants and attach the other end to the button groove of your pants to extend your dress or shirt collar to make it more comfortable, no sewing required. Easy to use: No sewing required, easy to use and remove, can easily add some width to your waistband/collar, allowing you to wear it more loosely and comfortably. Widely used: Our extension buttons are suitable for men and women, teenagers and adults, and can be used for all kinds of pants, regular pants, jeans, maternity pants. Due to manual measurement, the product you receive may have some size errors Due to different monitors, the product you receive may be slightly different from the picture Thank you for meeting me and I hope it helps. I wish you a happy life Actual quantity shipped: 1 piece