Kask Protone Cycling Helmet - Unisex 5046-801
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Kask Protone Cycling Helmet - Unisex

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Show Description

A tremendous helmet that combines class-leading aerodynamics with everyday cooling and comfort. Developed in collaboration with Team Sky, it provides total coverage and locked-in, comfort without feeling bulky. Wind-tunnel tested, the exquisitely shaped shell offers aerodynamics regardless of your head position (Most aerodynamic helmets are aero only in certain riding positions). It's the details that make this helmet a special one: eco-leather chinstrap is supple and comfortable, while the micro dial provides a nuanced fit that can be tuned with one hand.

  • Shell is exceptionally aerodynamic while offering excellent head coverage.
  • Octo Fit tensioning with micro dial is comfortable, secure and easy to adjust.
  • Polycarbonate layers in key areas improve protection and shock absorption.
  • 3D Dry padding with open cell construction is comfortable and lightweight.
  • Removable and washable inner padding.
  • Inner padding and fabric are antibacterial treated.
  • Eco-leather chinstrap is comfortable and durable.
  • High visibility stickers are effective without detracting from aesthetics.
  • Carry bag included.

Tech specs

Show Tech specs
Weight 215g (Medium)
Ideal for Road cycling

Microshell helmets are made of a thin polymer sheet over a foam liner; Hardshell helmets have a hard polymer outer shell and a foam liner; when the liner is being bonded to the outer shell during the manufacturing process, it is Molded in the shell.

Molded in the shell
Shell material Polycarbonate
Fit system
  • Adjustable dial
  • Interchangeable foam pads
Inner material EPS (expanded polystyrene)

The internal circumference determines the size head that the helmet will fit.

  • 50-56cm (Small)
  • 52-58cm (Medium)
  • 59-62cm (Large)
Vents Yes
Approved for

Most helmets are tested and certified for a specific sport. Some helmets are approved for multi-sports, but only after passing the safety tests for both sports (i.e., snowsports and cycling).

Safety rating

Cetification is established by a variety of governing bodies who set impact standards. Most helmets are certified or approved for a specific sport, except in the case of multi-sport helmets (i.e., a snowsports helmet might also be approved for cycling if it meets the cycling safety standards).

  • CPSC
  • EN 1078
Made in Italy