Head: Measure circumference of head just above top of ears and eyebrows.
509-HEL-AACC-GPM
Head: Measure circumference of head just above top of ears and eyebrows.
Waist: Measure under arms, around the fullest part of the chest. Keep tape level across back, comfortably loose.
Chest: With arm fully extended, measure center back of neck at the spine to the wrist bone.
Chest: Measure under arms, around the fullest part of the chest. Keep tape level across back, comfortably loose.
Inseam: Without shoes, measure inside of leg, from groin to floor.
| Helmet Sizing | US Hat Size | Inches | Centimeters |
|
X-Small
|
6 5/8 - 6 3/4 |
20 7/8 - 21 1/8 |
53 - 54 |
|
Small
|
6 7/8 - 7 |
21 5/8 - 21 7/8 |
55 - 56 |
|
Medium
|
7 1/8 - 7 1/4 |
22 1/2 - 22 5/8 |
57 - 58 |
|
Large
|
7 3/8 - 7 1/2 |
23 1/4 - 23 1/2 |
59 - 60 |
|
X-Large
|
7 5/8 - 7 3/4 |
24 - 24 1/4 |
61 - 62 |
|
2X-Large
|
8 |
24 3/4 - 25 |
63 - 64 |
|
3X-Large
|
8 3/4 |
25 1/4 - 25 3/4 |
64 - 65 |
|
4X-Large |
9 |
26 - 26 1/4 |
66 - 67 |
| Youth Helmets | US Hat Size | Inches | Centimeters |
|
Youth Small |
6 |
18 1/8 - 18 7/8 |
47 - 48 |
|
Youth Medium |
6 1/8 - 6 1/4 |
19 1/4 - 19 5/8 |
49 - 50 |
|
Youth Large |
6 3/8 - 6 1/2 |
20 - 20 1/2 |
51 - 52 |
| Men's Sizing | X-Small | Small | Medium | Large | X-Large | 2X-Large | 3X-Large |
|
Chest |
34 - 36 |
36 - 38 |
39 - 41 |
42 - 44 |
45 - 47 |
48 - 50 |
52 - 54 |
|
Sleeve |
27 |
28 |
30 |
32 |
34 |
36 |
36 |
|
Waist |
30 |
32 |
34 |
36 |
38 |
40 |
42 |
|
Inseam |
29 |
30 |
31 |
32 |
33 |
34 |
34 |
|
Short Inseam |
29 |
29 |
30 |
30 |
31 |
31 |
31 |
|
Tall Inseam |
34 |
34 |
35 |
35 |
36 |
36 |
36 |
|
Gloves |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
| Women's Sizing | X-Small | Small | Medium | Large | X-Large | 2X-Large |
|
Chest |
30 |
32 |
34 |
36 |
38 |
40 |
|
Sleeve |
24 |
26 |
28 |
30 |
32 |
34 |
|
Waist |
28 |
30 |
32 |
34 |
36 |
38 |
|
Inseam |
29 |
30 |
32 |
34 |
36 |
38 |
|
Gloves |
5 |
6 |
7 |
8 |
9 |
n/a |
Head: Measure circumference of head just above top of ears and eyebrows.
Waist: Measure under arms, around the fullest part of the chest. Keep tape level across back, comfortably loose.
Chest: With arm fully extended, measure center back of neck at the spine to the wrist bone.
Chest: Measure under arms, around the fullest part of the chest. Keep tape level across back, comfortably loose.
Inseam: Without shoes, measure inside of leg, from groin to floor.
| Helmet Sizing | US Hat Size | Inches | Centimeters |
|
X-Small
|
6 5/8 - 6 3/4 |
20 7/8 - 21 1/8 |
53 - 54 |
|
Small
|
6 7/8 - 7 |
21 5/8 - 21 7/8 |
55 - 56 |
|
Medium
|
7 1/8 - 7 1/4 |
22 1/2 - 22 5/8 |
57 - 58 |
|
Large
|
7 3/8 - 7 1/2 |
23 1/4 - 23 1/2 |
59 - 60 |
|
X-Large
|
7 5/8 - 7 3/4 |
24 - 24 1/4 |
61 - 62 |
|
2X-Large
|
8 |
24 3/4 - 25 |
63 - 64 |
|
3X-Large
|
8 3/4 |
25 1/4 - 25 3/4 |
64 - 65 |
|
4X-Large |
9 |
26 - 26 1/4 |
66 - 67 |
| Youth Helmets | US Hat Size | Inches | Centimeters |
|
Youth Small |
6 |
18 1/8 - 18 7/8 |
47 - 48 |
|
Youth Medium |
6 1/8 - 6 1/4 |
19 1/4 - 19 5/8 |
49 - 50 |
|
Youth Large |
6 3/8 - 6 1/2 |
20 - 20 1/2 |
51 - 52 |
| Men's Sizing | X-Small | Small | Medium | Large | X-Large | 2X-Large | 3X-Large |
|
Chest |
34 - 36 |
36 - 38 |
39 - 41 |
42 - 44 |
45 - 47 |
48 - 50 |
52 - 54 |
|
Sleeve |
27 |
28 |
30 |
32 |
34 |
36 |
36 |
|
Waist |
30 |
32 |
34 |
36 |
38 |
40 |
42 |
|
Inseam |
29 |
30 |
31 |
32 |
33 |
34 |
34 |
|
Short Inseam |
29 |
29 |
30 |
30 |
31 |
31 |
31 |
|
Tall Inseam |
34 |
34 |
35 |
35 |
36 |
36 |
36 |
|
Gloves |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
| Women's Sizing | X-Small | Small | Medium | Large | X-Large | 2X-Large |
|
Chest |
30 |
32 |
34 |
36 |
38 |
40 |
|
Sleeve |
24 |
26 |
28 |
30 |
32 |
34 |
|
Waist |
28 |
30 |
32 |
34 |
36 |
38 |
|
Inseam |
29 |
30 |
32 |
34 |
36 |
38 |
|
Gloves |
5 |
6 |
7 |
8 |
9 |
n/a |
Replacement mount for 509 Helmets. This universal helmet camera mount fits all 509 helmet visor screws. Includes the mount foot and visor screw and is compatible with GoPro’s Hero cameras.
Note: Helmet and camera not included.