Shirts are measured in Cm's. Width is measured across the front of the chest
S - Width: 47 Length: 71
M - Width 52 Length: 75
L - Width 56.5 Length: 78.5
XL-Width 61 Length: 82
2XL-Width 64 Length: 83.5
3XL-Width 68 Length: 85
4XL-Width 75 Length: 87
5XL-Width 80 Length: 89