OneK Defender Liner

One K helmet liners provide flexibility for growing children, shared helmets or riders who wear hair differently for schooling and show! The liners are a perfect solution for sweaty helmets - just swap out liner for a fresh, clean and dry one.

XSmall, Small and Medium Helmets are built on a
Medium Shell – Use XSmall or Small liner to size down.
Use Medium liner for Medium size fit.

Large Helmets are built on a
Large Shell – Use Large liner only.

XLarge helmets are built on a
XLarge Shell – Use XLarge liner for XLarge fit.
Use XXLarge liner to size up.