1、Easy to Use: The shirt collar expanders are simple to use, just attach the elastic collar expanders to the existing buttons on your shirt for a quick and easy way to gain extra space. 2、4 Slots: The pant extender has 4 slots on it to lengthen the pant waist to about 0.5 to 2.5 inches for easy use. 3、20pcs: The set contains 20 collar expanders in black and white, a sufficient number and a complete set to meet the needs of daily use. 4、Invisible: The extenders are invisible and can be concealed under the waistband or tie, so you don't have to worry about whether the extensions will show or not, easy to use, no sewing, and you can easily and comfortably wear your favorite clothes. 5、Widely Used: Wide range of applications, quite suitable for shirts, dresses, pants, jackets, collars, etc. helping you to put on your favorite clothes again Item Type: Extender Button Set Material: Fiber, Plastic, Metal 10 x Collar Extender Button 10 x Elastic Waist Extender Button