Lululemon Racerback Tank Top

Black/Grey striped Lululemon Tank Top. In Like New Condition. Very lightweight and breathable material, stretchy. Unfortunately as you probably know there is not a size dot in the braless tanks. I believe it is a size medium or 6 but here are the measurements: Measures 15 1/2 inches across chest laying flat; 24 inches in length in the front of the tank