Two shirts and One hat combo
ADULT/MENS GENERAL SHIRT SIZING: 
XS 32"
S 34 - 36" 
M 38 - 40" 
L 42 - 44" 
XL 46 - 48" 
2XL 50 - 52"
3XL 4XL 54 - 56"
Size
Head Circumference
US Hat Size
XS/S
20 7/8" - 21 7/8"
6 5/8 - 7
S/M
21 7/8" - 22 5/8"
7 - 7 1/4
L/XL
22 5/8" - 23 7/8"
7 1/4 - 7 5/8
2XL
24 1/2" - 25 1/8"
7 3/4 - 8