Beverly Rock Women's Short Sleeve Housecoat Embroidered Duster Prints starting with number 580-586 is with a snap closure, Prints starting with number 585 is with a zipper closure We recommend on the plus sizes to go up one size [Small chest 40-42 inch][Medium chest 42-44 inch] [Large 44- 46 inch] [1X 46-48 inch] [2X 49-52 inch][3X 51-54 inch] Machine wash,