Lululemon puffer vest goose down checked inside size 4

Lululemon puffer vest I'm pretty sure this is a 4 unfortunately the tag is cut out and I don't look now the size I can't find the little size dot anywhere on the item. I have the measurements in the pictures as shown. 90% goose down 10%feathers The vest is in wonderful shape no stains tears holes or fading. smoke free home arm pit to armpit 17in. length is 23