Theory Genuine Leather sleeveless vest top

Vintage Theory piece that I’ve had for a very long time but never worn. Condition is excellent and well kept, very soft leather. No tags but feels like nappa leather? Size would be close to an XS. See below for measurements Neck circumference - 15.75” Shoulder to shoulder - 13” Armpit to armpit - 15.5” Waist - 14” Center back length - 22.5”