This Tupac Me Against the World t-shirt is officially licensed and manufactured by Bravado. The front is screen printed on a black t-shirt made from 100% cotton.  No design is on the back.

Size,          Brand,        Armpit to Armpit, Top to Bottom
Medium     Tupac                    19.5"                29"
Large        Tupac                     21"                   30" 
X-Large     Tupac                    23"                   31"
2X-Large   Tupac                    25"                   32"