Ovation x One K - M Class MIPS HelmetBuilt in the One K Factory for Ovation, this helmet is a game changer in the World Equestrian market. These are sized helmets and do not have a dial like the other Ovation helmets. These helmets look and fit incredible! The Ovation M Class helmet features a matte Polycarbonate and Advanced ABS Composite outer shell; injection molded shell design; washable quick dry, moisture wicking, anti microbial liner; stainless steel mesh; comfort padded harness