M's Base Layer Crewneck Size Chart

 

1-Length
 2-Chest 3-Sleeve
S 27 19.5 26
M 27.75 20.50 26.50
L 28.50 21.50 27
XL 29.25 23 27.50
2XL 30 24.50 28
3XL 30.75 26 28
 

*All measurements are in inches and were calculated on flat garments.