Lululemon herringbone Rulu half zip running top

Beautifully warm half zip running top in herringbone Rulu fabric from Lululemon. Reflective strip on zipper, thumbholes, tiny key pocket on back. I wasn't able to locate a size dot, pretty sure this is a size 6 but it could also be an 8. Measures 18" armpit to armpit across the front, about 23" from top of the shoulder to the bottom of the hem. Excellent used condition.