Simms T-Shirt Size Chart

Men's Sizes Chest* Neck* Sleeve*
S 33" - 35" 13.5" - 14" 32" - 33”
M 36" - 38" 14.5" - 15" 33" - 34"
L 39" - 41" 15.5" - 16" 34" - 35"
XL 42" - 45" 16.5" - 17" 35" - 36"
XXL 46" - 48" 17.5" - 18" 36" - 37"

Listed dimensions are body measurements.
Simms T-Shirts are cut differently than their Button-Down Shirts. Simms recommends to size up one size.