KEP FOAM IS MANDATORY AND MUST BE PURCHASED IN ADDITION TO THE HELMET. The foam will determine the final size of the helmet. For size M helmets, foam sizes range from 51 to 58. For size L helmets, foam sizesrange from 59 to 62. American helmet foam (for oval heads) with side padding, suitable for all KEP ITALIA Cromo 2.0 helmets. The interior padding of KEP Italia helmets corresponds to each rider size.There are 12 padding/sizes: the first huit (51 to 58) fit M (medium) size helmets, while the next four (59 to 62) fit L (large) size helmets.Padding is a very important element: its thickness determines how well the helmet fits the rider's head.The KEP Italia padding is made of a single piece, easy to remove and replace inside the helmet.Hand or machine washable at 30°C or in cold waterMade from Coolmax® fabric, an innovative fiber that maintains a cool temperature and improves skin hydrationIt also wicks away moisture quickly (it dries very quickly indeed)The fact that the padd...