One K Defender Refit Liner

The One K Defender Helmet Refit Liner can alter the fit of your One K Defender Helmet. You can easily change the liner to allow for a new hairstyle or growing children.

The Medium Shell is compatible with the following liners:

• X-Small
• Small
• Medium

The Large Shell is compatible with the following liners:

• Large
• X-Large
• XX-Large