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We feel the Arai XD4 Depart Helmet has an Intermediate Oval Shape, while offering a comfortable fit with an easy on / off effort as compared to other race style helmets.
Snell 2020 and DOT Approved.Information from Arai Helmets:
Offering three distinct configurations, allowing the user to choose which works best for their riding needs, the new XD4 is similar in appearance to the previous XD3, but greatly improved in all-around performance. The combination of the new comfort headliner, with microfitting 5mm peel-away temple pads, and our patent-pending FCS® cheek pad design, also with 5mm peel away layers, add a new dimension to the concept of helmet fit and customization. It takes a unique sense of commitment to continually strive to improve your product – especially when it's already regarded as the very best.
| Arai XD4 Depart Helmet Fitment | |
 | Intermediate Oval: Arai is the only company offering multiple interior-fit shapes to better address the infinite variety of rider's head shapes and sizes. The Arai XD4 uses their Intermediate Oval interior fit shape. Arai's Intermediate Oval shape is a little shorter front-to-back and a little wider side-to-side, compared to their Long Oval shape. |
| Arai XD4 Depart Helmet Technical Features: | |
 | Arai XD4 Depart Helmet FCS Cheek Pads: Arai's patented FCS® Cheek Pad design delivers comfort and support, and it features our exclusive 5mm peel-away custom-fit layer. |
 | Arai XD4 Depart Helmet Chin Vent: The vent has more intake ports for improved airflow. |
 | Arai XD4 Depart Helmet 5mm Peel-Away Side-Temple Pad: Arai's exclusive peel-away side/temple crown pads give you the option of 5mm more of interior width if needed. Yet another level of fit customization no other helmet brand offers. |
 | Arai XD4 Depart Helmet Fully Removable/Replaceable/Washable Interior: Arai's Dry-Cool® technology keeps you drier and cooler (hence the name) for greater long-haul comfort. |
 | Arai XD4 Depart Helmet Larger Side Cowl Vents: The larger, sculpted vents improve ventilation efficiency as well as helmet stability on your head at speed. |
 | Arai XD4 Depart Helmet Exhaust Ports & Shell Shape: These top-diffuser-vent ports nearly double the XD4's airflow, while its shell shape provides better aerodynamic stability at higher street speeds in concert with its high-flow peak and side cowl vents. |
 | Arai XD4 Depart Helmet Brow Vent Faceshield: Brow vents in the XD4 faceshield provide airflow to the temple area of the head. |
 | Arai XD4 Depart Helmet Emergency Cheek Pad Release System: Developed to allow easier access to an injured rider, the XD4's cheek pads slide out easily – via the integrated pull-tabs built into the underside of the cheek pad – making helmet removal much easier for trained medical personnel. |
Other Features:
