Kask Protone Helmet review

The Kask Protone, as worn by Team Sky is a vented aero helmet, but how does it perform? We tested it next to other leading aero lids to find out.
The Protone is a vented aero helmet, but how does it perform? We tested it to find out

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Review: KASK Protone Helmet

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Kask Protone helmet review