Women’s under armour top shirt

excellent condition dark blue under armour women’s compression style shirt, mock neck light fleece on the inside. I’m not sure if this is a large or a medium it measures approximately 18 inches across the bust prior to stretch and I am thinking it’s a large also has a finger holes on the wrists bundle three items or more from my closet for 50% off. Most items are included and there is a 5 pound limit.