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KASK Protone Helmet

Model Year
Helmet Size
139.00 60.00 discount
View the stock

  • Free tracked delivery
  • Trustpilot review 9.3 out of 47.790 reviews

Pros & Cons

  • Lightweight, aerodynamic.
  • Good ventilation for an aerodynamic helmet with 15 ventilation apertures.
  • Leather straps for extra comfort.
  • The design puts it between an all-out aero helmet and a highly ventilated helmet.
  • The leather chinstrap needs some cycling trips to feel comfortable.
Read more on what our customers have to say about this product


Brand KASK
Including VisorNo
Ventilation ★★★
Road Helmet Type All-round helmet
Weight 228 grams
Extra protection No


The Protone is the ''do it all'' aero helmet by KASK. The Protone offers the optimal combination of aerodynamics and cooling. Thanks to its Octofit adjustment system and divider ear straps you can adjust your Protone easily, quickly, and precisely for a perfect fit. Its eco-leather strap is very comfortable and prevents irritation to the skin. This strap is washable just like the helmet pads. Thanks to these features the Protone is the helmet perfect for both competitive professionals and
stylish touring riders.

Kask didn't just trust on Team Sky's input alone, so they spent a great amount of time on data research, position analysis (how does a rider move on the bike) and thermodynamic studies. For example: what is the best way to put away cycling glasses in the helmet without increasing drag.

Read more
Find out more on our Blog

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Including Visor No No No No
Model Year 2017 / 2018 2017 2017 / 2018 2017 / 2018 / 2019
Ventilation ★★★ ★★★ ★★★ ★★☆
Road Helmet Type All-round helmet All-round helmet All-round helmet Aero helmet
Helmet Size S / M / L / 50 - 56 cm S / M / L / 51 - 55 cm S / M / L / 51 - 55 cm S / M / L / 51 - 55 cm
Colour Nero / Bianco / Blue Matt / Nero Lime / Nero Matt / Nero Matt-Rosso Matte Black / Red / Matte Black / Matte Silver Bright Red / Matte Black / White / Fluo Yellow / Matte Black / White / Silver / White / Red Blue / Brown / Grey / Green / Red / White / Black
139.00 109.95 119.90 112.40
This product View product View product View product

Customer photos


9.3 / 10 Average from 151 reviews | Write a review
9.3 / 10

151 reviews


  • Light weight (7)
  • low weight (7)
  • Aero (6)
  • Comfortable (5)


  • Expensive (3)
  • None (2)
  • None at this price! (1)
  • Pricier than alternatives but get what you pay for (1)

Most recent reviews

10 / 10

Hugh, 2 July 2019

Perfect fit and light

The adjustments cater for the perfect fit. Also it’s so light you do forget your wearing it. I am very pleased with my purchase I would recommend.


  • Nice fit
  • Light
  • Lots of adjustment straps to aid fit
  • Appearance
  • Looks high quality


  • Expensive

9 / 10

ALEKSANDRA, 18 June 2019

great fit, nice look, lightweight, very happy with the purchase

10 / 10

Rhys, 17 June 2019

Brilliant helmet

Excellent helmet in Matt black finish. Really good fit.


  • Really excellent fit
  • Looks good
  • Feels snug and fast
  • Excellent chin strap

10 / 10

Stewart, 6 June 2019

First but not the last!

Great helmet at a great price. Service was fantastic from Mantel with my first order and I am sure to use them again.


  • Great looking helmet
  • Aerodynamic
  • Pro looks


  • None

10 / 10

Emma, 6 June 2019

Awesome service

Excellent helmet, light as a feather could hardly tell I was wearing it. Arrived super fast, excellent price too.

All specifications

Detailed product description


3D Dry
The padding in this helmet uses 3D-Dry technology, which offers optimal comfort and performance.

Aero Control
This helmet is fitted with a wind-tunnel tested aerodynamic shell. Whichever way you’re looking, the air exhaust will always be able to do its work.

ECO Chinstrap
An anti-allergenic and washable chin strap with high levels of comfort. Helps prevent skin irritation.

M Moulding
This technique connects the inner polystyrene layer to the outer polycarbonate one, together offering more shock absorption.

MIT Technology
The MIT technology ensures your head is optimally protected. The polycarbonate layer covers the entire helmet: base, lower ring, and rear.

Octo Fit
The rubber micro dial adjustment system on the helmet can be operated with a single hand. The dial can be turned 180 degrees, allowing you to quickly and easily tune the fit. The Skeletal brackets have been designed to optimally support your head.

The pads have an antibacterial coating designed to prevent any foul smells.

Customer Service
020 3695 9922