The One K MIPS CCS Helmet Liners offer ultimate in flexibility and fit.  Switch out liners during hot, sweaty weather to easily and quickly wash and dry.  Also, if a One K™ CCS MIPS Helmet does not come in your exact measured size, you can easily adjust the liner for a perfect fit.
The padded helmet liners also provide ultimate flexibility for growing children, shared helmets, or women who wear hair differently for schooling and show! Three shells make up all sizes.

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ATTENTION PLEASE READ READ BEFORE PURCHASE: How to fit your liner for size up/down within a shell. The three 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. Use the X-Large size helmet with the XX-Large liner to change the fit to XX-Large.

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 Features:

• Soft padded snap in helmet liner
• Easy to wash, quick dry
• Liners may be purchased to customize helmet size between size S, M and XL

 One K™ Helmets boast the perfect synergy between advanced technology and aesthetically pleasing design. Certified to ASTM standards.

Helmet Shapes - What's Right for Me?

• Regular/Round: head which has almost identical front-to-back and side-to-side measurements.
• Long Oval:  head which is longer front-to-back (from forehead to the back of the skull) than it is side-to-side (ear to ear).