Chase Authentic Racing t-shirt #20 Tony Stewart, Home Depot Nascar, Brickyard, Allstate 400 Indianapolis. Orange with Black tie-dye/grunge look. 
NO size or garment care tag.  Appears to be a mens Medium, but rely on measurements:
chest arm pit to arm pit: 28"
length shoulder seam to hem: 28"
vintage pre-owned condition with no rips, tears, holes, stains or issues. Item has been properly cleaned.