eBoot 12 Pack 10 mm/ 0.38 Inch Metal Collar Extenders Button Extenders for Shirt Dress Trouser Coat Collars Pants Button extenders(10 mm 3/ 8 inch in diameter) help stretch your shirt collar Pure color buttons suit your white dress or shirts Removable, take only a few seconds to attach, no sewing required Flexible spring design creates approximately a 1/ 2 to 3/ 4 size increase in your shirt's collar area Lightweight, easy to carry Premium metal collar extender or pant extender are perfect for slight weight fluctuation, early stages of pregnancy. 10 mm/ 0.38 Inch in size and are specifically designed to fit shirt, dress, trouser, coat, collars, pants and so on. Acting as your secret ally to let you feel comfortable and relaxed without replacing your old shirt or pants. Easy to use, simply loop around your shirt`s button, no sewing required. It greatly prevent you from buying new shirts or pants for being tight.