Practical combination suit: the suit has 20 pieces of elastic button extensions, including 10 pieces of jeans button extenders and 10 pieces of men's shirt collar extenders, which are available in black and white, with sufficient quantity and complete combinations to meet your daily use needs Long term stable use: the dress shirt neckline extender is made of high-quality metal, which is easy to stretch, providing you with a com suitable fortable wearing experience; extension cord is made of high-quality elastic belt, which has good elasticity, making your pants more suitable and com suitable fortable Adjustable and easy to use: The neck expander of the dress shirt is simple to use. You can quickly and easily obtain additional space by connecting the elastic collar expander to the existing button on the shirt; There are 3 slots on the extension line of women's trousers, which can extend the waist of the trousers to 0.5-2.5 inches suitable for easy use Com suitable fortable and invisible: The button extender is invisible and can be hidden under the belt or tie. You don't need to worry about whether the button will be exposed. It is also easy to use without sewing, so that you can easily and com suitable fortably wear your favorite clothes Wide range of applications: button extenders suitable for shirts and pants are widely used, which are very suitable suitable for shirts, dresses, pants, jackets, collars, jeans, etc., to help you put on your favorite clothes again Color: black+white Material: Cloth Package Contents: 20 pieces of elastic button extensions, including 10 pieces of jeans button extenders and 10 pieces of men's shirt collar extenders Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.