509 Atmosphere Offroad Helmet
| Size | 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 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 |
509 Atmosphere Offroad Helmet
The new Atmosphere Offroad Helmet brings next-level safety, comfort, and affordability to dirt riders who demand performance on both track and trail. Featuring dual certification to meet both DOT and ECE 22.06 standards, this helmet delivers trusted protection without compromising on weight or style. A lightweight polycarbonate shell and dual-density EPS foam absorb impact while strategic venting keeps airflow optimized. With quick-dry, removable cheek pads and liner, plus a secure D-ring closure system, it's a helmet built for long rides and quick cleanups. The universal camera mount and replaceable visor top off a smart, functional design made to go wherever you do.
Features:
- Injection molded polycarbonate shell for lightweight durability
- DOT and ECE 22.06 certified for international safety standards
- Dual-density EPS foam for enhanced impact absorption
- Channel venting in EPS and liner for increased airflow
- 6 intake and 6 exhaust vents for maximum ventilation
- Secure double D-ring chin closure
- Moisture-wicking, removable liner and cheek pads for easy cleaning
- Universal camera mount for action footage
- Replaceable polycarbonate visor for extended product life
| Gender | Unisex |
|---|---|
| Stock # | F01021540-1 |
| Brand | 509 |
| Vend | S2 |