Marushin C139 Mono, jet helmet

To have a maximum safety the helmet must fit tightly and be correctly and securely fastened, in order not to be able to be taken off neither by pulling it nor by rotating it around the head. If it is too big, it may slide down over the eyes or turn in a lateral direction due to movement during riding, blocking the right visibility. Safety Internal Polystyrene protective lining, available in two sizes (M and L). The special shape and construction in different density increases mechanical resistance in the event of accidental shock. Inner channels studied in the wind tunnel guarantee a perfect ventilation.
The Shield is thermoformed from a polycarbonate flat sheet. Each shield is a one-of-a-kind piece with unequalled optical features and mechanical resistance. Thanks to this process, the face shield is anti scratch and anti fog and there is no need to use additional lenses on the visor.
Retention System D-Ring studied and patented by Suomy, it has been studied by milions of end users and it is the best system in the world. The chin strap has a D-Ring close in Inox steel and button to fix the closure. The button is in an area completely free and allows an easy use even with gloves: when the button is closed , the chin strap creates a loop, which can be used as a ring to pull the tab and undid the closure system. ECE 22-05 Comfort Cheekpads completely removable and washable, in different thicknesses for a complete customization of the product.
Internal Shell completely removable and washable, in different thicknesses for a complete customization of the product. The internal removable shell has been studied for an uniform stand on the head. The visible channels allow the air flow to check the temperature in teh internal part of teh helmet and to let off the hot air through the back part.
Inner (cheek pads and inner liner) are completely in fabric COOLMAX® ACTIVE with treatment INTERPOWER:
Wicks sweat away from the body. Keeps the user fresh, dry and comfortable. Lightweight, soft and breathable fabric. Performance verified and certified by ADVANSA.
Removeable Nose Protector Ventilation The innovative rear air intake on the SR SPORT has been designed to further improve ventilation inside the helmet, using residual air flows that, again thanks to the Venturi effect, are able to generate a depression in the lower part of the helmet, in this way ensuring a substantial extraction of the hot air inside it, consequently maintaining a comfortable temperature even at the back of the head (neck). Aerodynamics The ventilation system of SR SPORT, together with the special shape of the internal shell , optimize the outside and inside flows.
Fed by inside air ventilation and using the Venturi effect, they optimize the internal ventilation. The back spoiler has been studied to reduce the helmet vibration. This grants an uniform diffusion of the air flow in the internal part of the shell.
This helmet comes standard with a clear visor.

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New frame design with a shorter whellebase for agile handling in traffic and on easy trailsThe Carbon fork is light weight, stiff for better handling and compliant for better comfort27.5/65b wheel size allows larger tyre profile without changing handling or the overall  wheel diameter65bx42 Clement tyres high volume tyres can be  run a lower pressure to offer better comfort and traction.Shimano Steps E6 ebike system features a powerful 5NM centre mount motor with almost no drag so it doesn't hinder you if you turn it off or exceed 25kph 418wh battery  with a range of up to 125kmSimple to use and easy to maintain Alfine Di2 hub features electronic shifting and an automatic mode where the bike will coose the right gear the useShimano  Hydraulic disc brakes for controlled stopping whatever the weatherThe Selle Royal Lookin Athletic saddle has gel inserts for comfort but maintains a light wei

for all FF327 Challenger models.
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Outer material
Softshell
Membrane
Waterproof membrane
Thermoregulation
Removable down jacket lining.
Protectors
Adjustable elbow protection ALPHA. Shoulder protection ALPHA. Back protection pocket
Comfort
Body fit ADS-ventilation system Vorderarmtasche Wallet pocket Two inside pockets Four outside pockets Cuffs with zip Loops to connect the pants Fixed mesh lining