Oval liner for OneK helmets. Please note that sizes XXXS, XXS, and XXL are only available in round shape. Each liner covers two classic helmet sizes (cm) and is easy to remove and wash. The table below shows which liner fits which shell size.

OneK's liners are made of polyester and sit comfortably against the head without chafing. They are well-ventilated with mesh on the sides, making them pleasant to ride in during both short and long sessions.