If a One K CCS MIPS Helmet does not come in your size, you can easily change the liner for a perfect fit. Liners also provide ultimate flexibility for growing children, shared helmets, or women who wear hair differently for schooling and show

The base shells are Medium, Large and X-Large. Use the Medium size helmet with a Small or X-Small liner to change the fit of the Medium helmet into a Small or X-Small. The Large shell will only accommodate a Large liner and cannot be size-adjusted but having an extra liner on hand is always nice. Use the X-Large size helmet with the XX-Large liner to change the fit to XX-Large.

Features:

Adjust the fit of One K MIPS helmet
Can be taken in and out to account for hair
Useful with growing children