ShoppeWatch Collar Extenders For Mens Dress Shirts 10-Pack Expanders Neck Tie Trousers Coat Collars Pants and Maternity Wear 10 PACK :10 high-quality metal shirt collar expanders per pack. The shirt buttons are individually packed in miniature bags. COMFORTABLE : Get a 1/2-size of extra room, or daisy chain two shirt collar extenders together for a full size of extra comfort. DISCRETE : These collar extenders for men's shirts function as discrete extensions and disappear completely under any neck tie NO SEWING : Easy fit 1 inch removable expander - simply loop around your shirt's button. DIMENSIONS : 10mm (3/8-inch button diameter) metal collar expander / extender