This Rage Against the Machine Stacked Star t-shirt is officially licensed and manufactured by Live Nation. 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     Tultex                    19"                   30"
Large        Tultex                     21"                   31"
X-Large     Tultex                    23"                   32"