High rise lululemon patterned leggings

These are a very cool pattern! To me it’s like a blue and black brushstroke pattern. So pretty. I am uncertain of the size on these. I am a 6 and these feel tight on me. They are what I think the Luon material is. Definitely not luxtreme or align fabric. I am going to guess these are a size 4, but if you are in between 4-6 I think these would fit great. Again size 4 is a guess there is not a pocket to check the size. They COULD be a 6 that feels more stiff :( price negotiable!