GU Pink Trainer, Size M The size notation printed on the neckline has faded and is difficult to see, but it is definitely size M. Personally, it feels similar to a size S when I wear it. The arms are particularly slim. Other than the faded size notation, I don't think there are any noticeable stains, but please check the photos. ⭐️ Instant purchase OK ⭐️ No pets, no smokers Feel free to ask if you have any questions.