![Amazon.co.jp: KASK Helmet Protone Blu Mat M Helmet Size: 20.5 - 22.8 inches (52 - 58 cm) : Sports & Outdoors Amazon.co.jp: KASK Helmet Protone Blu Mat M Helmet Size: 20.5 - 22.8 inches (52 - 58 cm) : Sports & Outdoors](https://m.media-amazon.com/images/I/81V5kpO44OL._AC_UF1000,1000_QL80_.jpg)
Amazon.co.jp: KASK Helmet Protone Blu Mat M Helmet Size: 20.5 - 22.8 inches (52 - 58 cm) : Sports & Outdoors
The Service Course Girona - The Kask Protone, a real customer favorite. We have a selection of colours and sizes in stock so drop by to try one on. That matte blue
![Kask Protone Icon helmet review – unboxing, fitting, sunglass showdown, weigh-in and first comments - YouTube Kask Protone Icon helmet review – unboxing, fitting, sunglass showdown, weigh-in and first comments - YouTube](https://i.ytimg.com/vi/QtuO4_htDBI/maxresdefault.jpg)