I am 13 and bought this helmet in large. it didnt fit :( so instead i went for a Giro. They are great! and fit snug. I would reccomend this helmet to you. :)
The medium size fitted my 11 year old so might need large for an older child, but depends if they have a big head or not.
answered 1 year, 3 months ago
by
Jonnie
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answer 5
In my experience a small/medium would fit. All TSG helmets come with removable pads to optimize fitting thin pads for medium and the thicker ones for a smaller head.
Please see following link http://www.evanscycles.com/product_document/file/cab/46f/1bf/608/tsg-helmet-sizing-chart.pdf for sizing chart as we currently have large/xlarge in stock which is suitable for 57-59 cm.