Hello, this is a Womens new with tags Nike size large active racer back shirt with built in bra.  Underarm to underarm measures 15 1/2 inches.

Thanks for looking, I ship Mon thru Sat so you get your items fast. Please view my other listings and save with a combined shipping discount, all items are from a smoke free home. Thanks!!! I ship to your confirmed ship to address unless you contact me prior to shipment.