Tuesday Bassen Red & Black Striped Ringer tee size Small

Tuesday Bassen Red & Black Striped Ringer tee size Small. Black ringer collar & sleeves, with white piping detail. SO soft. Light, thin fabric. Not very fitted, material is more loose. Only worn a few times, in good pre-owned condition. However, I found a very small stain after pulling it out of the laundry, shown in last pic. Unsure how it happened but would probably be easy to get it out. Will provide measurements upon request! *Reminder that all items from my closet are from a pet-friendly household.