Vibrant T-shirt in two colors and all the sizes. Art by @captainmagenta.
Specs on T-shirt (in inches)
XS: Length 27, Width 16.5
S: Length 28, Width 18
M: Length 29, Width 20
L: Length 30, Width 22
XL: Length 31, Width 24
2XL: Length 32, Width 26
3XL: Length 33, Width 28
4XL: Length 34, Width 30