-thin sweater material {how to pick the right size} after pressing "buy now" a screen will pop up which will give you the option of the sizes. Chose the size you want and continue with checkout. *i am not responsible if you have purchased the wrong size, poshmark police* -xoxo Emily&Ebony (each product has a name to go along with it to make it unique and easier to find! For example: Lily Blouse, to find it search up Lily Blouse and it should pop up!)