One K™ Defender Helmet Liners

Removable washable quick-dry, moisture wicking, anti-microbial liner. Swap out for fresh new helmet feeling, or even change sizes of your helmet. If a One K™ Helmet does not come in your size, you can easily change the liner for a perfect fit. The liners are a perfect solution for sweaty helmets, just swap out liner for a fresh, clean and dry one. THREE SHELLS MAKE UP ALL SIZES. XSmall, Small and Medium Helmets are built on aMedium Shell – Use XSmall or Small liner to size down.Use Medium liner for Medium size fit. Large Helmets are built on aLarge Shell – Use Large liner only. XLarge helmets are built on aXLarge Shell – Use XLarge liner for XLarge fit.Use XXLarge liner to size up.