This Police Sunglasses With Paint T-shirt is officially licensed and manufactured by Just Say Rock.  The front is screen printed on 100% cotton black T-shirt.  No design is on the back.

Size,          Brand,        Armpit to Armpit, Top to Bottom
Small         Gildan                   17.5"                28"
Medium     Gildan                   19.5"                29.5"
Large        Gildan                    21"                   31"
X-Large     Gildan                   23"                   32"
2X-Large   Anvil                      25"                   33"