Colorful Brand Women's White Ribbed Racerback Tank Top

Colorful Brand Women's White Ribbed Racerback Tank Top, OS, EUC. This tank top is super comfy, made of 92% polyester and 8% cotton. It is great for layering. There is a tiny bit of hard-to-see discoloration on the back collar as shown in the picture. The tag states that it is ONE SIZE, but to me, it fits more like a small or medium.