The One Helmet
The One gets its name because it's several helmets in one, and the helmet the fully featured and offers a lot of options and is highly customizable. The One helmet has 31 vents and comes with a slew of innovative features. Those include a sunglasses garage, a removable visor, an integrated LED light and plug, detachable airfoils, interchangeable all season liners and an emergency QR code. The One and Messenger both meet or exceed the European and US CPSC safety standards for bicycle helmets. The One weighs 280 grams with its summer liner and the blinky attached.The helmets use an EPS liner and a polycarbonate shell, and for proper fitting they utilize their Click-to-Fit retention system along with two vertical adjustments. The One comes in a Road version in either Standard or Premium trims and a Mountain bike colorway in only the standard trim. The Premium trim includes the two-piece aeroshell though you can purchase the aeroshell for an additional $40 if desired since it fits any version. The One and Messenger helmets will be available in several color combinations and two sizes, small/medium and medium/large. 

All Season Liners
The helmet includes two different liners, a normal padding system for warm weather and another fleece skull cap with ear protection for cooler conditions. The washable fleece winter liner should mean you won't need an additional skull cap or winter hat during those cold rides. It uses a convenient hook-and-loop retention system for quick and simple liner swap outs, yet it still keeps the liner securely in place.
LED
The rear-facing integrated lighting system (i.e. - the Blinky) is positioned just above the neckline for maximum visibility. The LED has three settings, off or operating in either a continuous or flashing mode to enhance visibility and safety. The LED is removable and can be replaced by a plug when the unit isn't required. The LED will be a great item for any commuter and will even be useful for the mountain bike night riders, so other trail users are aware of your presence, including your group buddies. It uses a coin cell battery for power and is supposed have a 40-hour life.
Sunglasses Garage
The helmet has a location just above the brow that is designed specifically to hold a pair of sunglasses. This garage or perch is easy to use,  even with gloved fingers and the sunglasses temples just pop into a set of the lower front vents, offering a secure and stable purchase. Depending on the style of your sunglasses they might fit either right side up or upside down
Removable Visor
The helmet has a removable visor that makes it perfect for on and off-road adventures and rides. Mountain bikers love visors while roadies despise them, so the removable features make it cross functionally for all users purposes and desires.
Safety QR Code
The helmets include a safety QR Code, so if an accident occurs, a first responder can use a smartphone to read the QR codes to get emergency contact information or medical data through the use of-of a sixty-second recorded voice message.
Removable Aero Shells
This particular option is available only on the upscale and road oriented The One Premium model. The removable aeroshells allow you to adjust helmet ventilation and aerodynamics.  The two-piece shell system easily snaps on and off, allowing one to alter the ventilation characteristics of the helmets 31 vents, and you can completely or partially cover the inlets. This system will also be advantageous for winter rides and triathlon and TT racers.

Their Click-to-Fit retention system can easily be used even with gloved fingers and its micro-adj