The S-ONE Premium helmet is a Non-Certified helmet with soft foam inner padding. The soft foam inner padding is wrapped with our DLX terry liner. The DLX helmet liner is a soft sweatband material that is sewn around the helmet padding. The DLX liner soaks up sweat and keeps your head cool and helps the inner pads last longer. Also, the DLX liner is easily washable so you can rinse it out after a heavy session. Features: * Absorbo (soft) inner foam padding * DLX sweat absorbing terry cloth liner Certification: * This helmet is NOT CPSC Certified so it cannot be shipped to customers in California. * This helmet is NOT CPSC Certified so it is not certified for bike use. X-Small(20"), Small(21"), Medium(22"), Large(23"), X-Large(24").