J.Jill Long Sleeve Split Back w/Buttons Sweater-Size Medium/Petite-Soft

J.Jill Long Sleeve Split Back w/Buttons Sweater-Size Medium/Petite. Item is in Good Condition. The material is 48% Cotton, 48% Acrylic and 4% Nylon. Laying flat measuring armpit to armpit it is 23'' and 28'' in length. Please measure something that fits you laying flat. The length is measured from the shoulder to the bottom hem. I measure the waist laying flat and double that for the waist measurement. This is for both our benefits so there will be no hassle of returns for not fitting. Thank you in advance.