Women's Lululemon Tank Top Black Official Size Unknown Possibly a 6 or a 4

This is a pre-owned Lululemon athletic tank top. It is black and features a racerback design. The tank top is made of a stretchy, moisture-wicking material. It has a built-in bra and a small pocket on the back. The tank top is in good condition with no visible stains or tears. It measures approximately 26 inches in length and 14 inches in width. My guess is it seems to possibly be a size 6 or a 4. No Tag or Size Dot found. A3