Reversible Nike sports bra with spaghetti strap

Smooth gray mesh on one side, pink t-shirt like fabric in the other. There is no size tag. The band measured about 11.4 inches across while lying flat. It could be either a Small or Extra small in Nike sports bras. So I would suggest comparing it with the band of a bra that fits you— it stretches but it is not super forgiving. Pink fabric has some pills and shows wear.