Junior sized helmet will be catered for by having one size of shell and 2 different thicknesses of wall on the liner to cover size S-L (52-57cm) and the (57-64cm) L-XL.
The liners can be taken out and swapped over once the Junior progresses to the next size liner saving on the cost of buying an entirely new helmet.....or at least that the thought process I have got at the moment
Any parents out there's views upon this would be welcomed as to if you think its a viable approach
E.g. Purchase a £40 helmet in size S-L then once they have outgrown that size a new liner is fitted in size L-XL for £15.00 to the shell you already have in order to avoid buying a new helmet altogether.
Roco...no nothing to do with that im hibernating as winter is coming