ONeal Thunderball 2.0 Helmet
Key Features:
- Lightweight ABS shell
- Weight 980 g (±50 g)
- Sweat-absorbing and removable, washable inner liner
- Height adjustable visor
- Fidlock® magnetic buckle for easy, single-handed fastening and release
- Durable multi-colored clear-coated graphics
- Exceeds EN1078 safety standard for bicycle Helmets and fulfills ASTM Downhill standard
Occasionally, without notice, manufacturers change product design and/or specifications.
O'Neal Helmet Size Guide
How to measure
To find the circumference of your head, place a tape measure in the centre of your forehead, wrap it around above your ears and around the back of your head. If there's a slight difference between two different sizes, always go for the tighter size.
Full Face Helmets
Adult sizing
|
Size |
XS |
S |
M |
L |
XL |
XXL |
|
(cm) |
53/54 |
55/56 |
57/58 |
59/60 |
61/62 |
63/64 |
Youth
|
Size |
M |
L |
|
(cm) |
48/50 |
51/52 |
Open Face Helmets
Thunderball
|
|
Adults |
|
Youth |
|
Size |
XXS - S |
M - XL |
XXS - S |
|
(cm) |
52-57 |
57-61 |
52-56 |
Defender – Adults
|
size |
S - M |
L - XL |
|
(cm) |
54-58 |
58-61 |
Pike – Adults
|
size |
S / M |
L / XL |
|
(cm) |
55-58 |
58-61 |
Q RL – Adults
|
size |
XS - M |
L - XL |
|
(cm) |
53-58 |
58-63 |
Orbiter – Adults
|
size |
XS - S |
M - L |
XL - XXL |
|
(cm) |
53-56 |
57-60 |
61-64 |
Dirt Lid
|
|
Adults |
|
Youth |
|
|
|
size |
M - L |
L - XL |
S |
M |
L |
|
(cm) |
55-59 |
58-61 |
47-48 |
49-50 |
51-52 |
Trailfinder – Adults
|
size |
S - M |
L - XL |
|
(cm) |
54-58 |
59-63 |
Rooky – Teenagers
|
size |
XXS |
|
(cm) |
51-56 |
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No longer available
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This product is no longer available.