XL=US 16-18. This item is gently pre-owned, in nice condition. Lay Flat Measurements: Armpit to armpit: 23.5" Sleeve: 17" Length: 26" Questions are always encouraged, please ask! Casual oversized jumper top with lapel collar, sexy v neck, long sleeves, loose fit style, ribbed collar/hem/cuffs, classic striped pattern, chunky knit sweater, provides warmth and comfort all day long.