The Protone is the ''do it all'' aero helmet of KASK. The Protone offers the optimal combination of aerodynamics and cooling. Thanks to its Octofit adjustment system and divider earband you can adjust your Protone easily, quickly, and precisely for a perfect fit. Because of its eco-leather strap it is is very comfortable and prevents irritation on 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 the stylish touring riders.
Kask wanted more input besides Team Sky's so they spent a great amount of time to data research, position analysis (how does a rider behave on a bike) and thermodynamic studies. For example: what is the best way to put away cycling glasses in the helmet without increasing drag.
A bit expensive but lightweight, looks great fits really well.
8 / 10
Alexander on 27 September, 2017
Nice helmet, on the small side
Great adjustment and fit, plus the matte looks cool! I came from crashing a specialized prevail in medium which should be the same size in cm, but the kask is much smaller.
10 / 10
James on 10 April, 2017
Best helmet in the market
Can't beat this helmet for all round performance and comfort
Can't think of any
10 / 10
Keith on 9 April, 2017
Excellent helmet from top retail
Previously had a Kask Vertigo and that was great but the Protone is even better. The rear adjustment is particularly good and well thought out.
More aero? don't have a wind tunnel but certainly feels like it is!
The padding in this helmet uses 3D-Dry technology, which offers optimal comfort and performance.
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.
An anti-allergenic and washable chin strap with high levels of comfort. Helps prevent skin irritation.
This technique connects the inner polystyrene layer to the outer polycarbonate one, together offering more shock absorption.
The MIT technology ensures your head is optimally protected. The polycarbonate layer covers the entire helmet: base, lower ring, and rear.
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.
• Sizes: M (52-58 cm) & L (59-62 cm)
• Weight: 233 grams (size M Weighed by Mantel.com)