GUC Smart Set short-sleeved sweater with button back, size XL, plum purple

Smart Set short-sleeve boatneck sweater with button detail on the back Size: XL Colour: a dark magenta/plum purple Flat-lay measurements: Armpit to armpit = 17.5" Length (shoulder to hem) = 24.5-25" Fabric/material: 48% rayon, 32% cotton, 20% nylon (mostly natural fibres!) Condition: GUC (good used condition). Not brand new but lots of wearable life left! Minor pilling in the armpits. Stored folded in a plastic tote bin (away from dust, etc.) for a few years.