How to measure
Chest
To make your measurements as accurate as possible, place a measuring tape directly under each armpit at seam and lay tape flat across chest.
Length
Measure from the high shoulder point (where neck meets shoulder) laying tape flat and straight to the bottom hem of garment, including any tapings of cuffs.
Please note
All Onboard pieces are made to order. We always try to follow this guide as close as possible but due to stitchings and factory processes we ask our customers to allow a tolerance of 1 inch. We also ask if you are in between sizes, to size up.
Womens Jerseys

Size |
Chest |
Length |
XS |
36-37" |
27.1" |
S |
38-39" |
27.8" |
M |
40-41" |
28.3" |
L |
43-44" |
28.8" |
XL |
46-47" |
30" |
2XL |
49-51" |
30.4" |
3XL |
53-55" |
31" |
4XL |
57-59" |
31.4" |
Unisex Midlayer

Size |
Chest |
Length |
XS |
40-42" |
28" |
S |
42-44" |
29" |
M |
44-46" |
29.5" |
L |
46-48" |
30" |
XL |
48-50" |
30" |
2XL |
50-52" |
30.5" |
3XL |
52-54" |
31" |
4XL |
54-56" |
31.5" |
5XL |
56-58" |
32" |
6XL |
58-60" |
32.5" |
7XL |
60-62" |
33" |
Youth Jerseys

Age |
Chest |
Length |
4–5 |
26-28" |
19.5" |
6–7 |
28-30" |
20.5" |
8–9 |
30-32" |
21" |
10–11 |
32-34" |
22" |
12–13 |
34-36" |
24" |
14–15 |
36-38" |
25" |
Womens Midlayer

Size |
Chest |
Length |
XS |
37-39" |
28.8" |
S |
40-41" |
29.3" |
M |
43-44" |
29.7" |
L |
46-47" |
30.7" |
XL |
49-51" |
31.3" |
2XL |
53-55" |
31.8" |
3XL |
56-58" |
32.2" |
4XL |
59-61" |
32.8" |
Youth Midlayer

Size (Age) |
Chest |
Length |
4–5 |
28–29" |
20.7" |
6–7 |
30–31" |
21.1" |
8–9 |
32–33" |
21.6" |
10–11 |
34–35" |
22.6" |
12–13 |
36–37" |
24.2" |
14–15 |
38–39" |
25.5" |