Women's Sandy Hook Promise 10-year remembrance t-shirt - dark gray.  The tag says that it is a medium size, but I think it was mislabeled.  The shirt is a slim women's fit.  The width under the arms is 17 inches and the length is 25 inches, which would be closest to a Gildan Softstyle size XS.  Fabric is 65% polyester and 35% cotton.   Never worn.  From a non-smoking home.