Team 365 Youth and Adult Performance Shirt. 100% polyester interlock with moister-wicking and UV protection performance. They are said to run a little on the large side and the fabric is thin. Very nice for Florida Pool days.
Additional $3 for 2X. 
 
Adult Sizing
(in inches)
XS
S
M
L
XL
2XL
3XL
4XL
Body Length
26
27
28
29
30
30 ½
31 ½
32 ½
Sleeve Length
33 ½
34
35
36
37
38
39
39 ½
Body Width
18 ½
20
21 ½
23
24 ½
26
27 ½
29
Chest
32-34
35-38
39-41
42-45
46-49
50-52
53-56
57-60
Neck Circumference
20 ⅛
20 ¾
21 ⅜
22
22 ⅝
23 ¼
23 ⅞
24 ½
 
 
Youth Measurements
(in inches)
XS
S
M
L
XL
Body Length
21
21 ¾
22 ¾
24
25
Body Width
15
16
17
18
19
Chest
N/A
26-27
28-30
31-32
33-34
Sleeve Length
24
26
28
30
32