Button covers. Simply changing the buttons on a cardigan, jacket, or other garment can dramatically change its look. Size: Width: Approximately 2.3mm The hole in the middle for inserting the button's sewing thread is approximately 5mm. One bonus button cover of the same type and color, but with a slightly different shine, will be included. Although unused, please understand that this item has been stored at home. Thank you. m(_ _)m