Lululemon reflective tank

Super cute racerback tank with cut out dots, reflective dots and reflective strips. Note the strips don’t exactly lay flat. Purchased from dantheluluman in a Poshmark show in hopes it would fit but it’s too small for me. I wear a 4 or 6 in Swiftly but this doesn’t stretch much. No tags. Guessing it’s a small: 2 or 4. Questions? Just ask :)