One Size is how Brandy Melville's clothes are so go by my measurements listed below. I would say depending on how you would like it to fit, it could fit Sizes XS-Medium Army Green Bomber Jacket. Preowned and in LIKE NEW CONDITION! You will be very pleased. 100 % Cotton no stretch at all. Armpit to Armpit 21" Length 23" Sleeve 23 1/2" The 2 Front Pockets has the little stitch still in tact since both pockets were never used Zipper Front Closure Stretch Crew neck color and cuffs