Just for a bit of fun, Chieftain  Evolution T-Shirt 

Hand Printed onto Gildan Heavy Cotton T-Shirts up to XXL

Onto Uneek or Fruit of the Loom for XXXL and XXXXL

Size                    S    M       L       XL   2XL   3XL     4XL

Chest/Inches     38   40   42/44   46    48    50/52    54