This cap is part of the official 2015 Williams Martini Racing team collection. 100% Authentic and Original. This WMR Team cap is identical to the wore by the team around the world in Grand Prix races, inside the paddock, etc. Williams fans can enjoy feeling and looking the part in the Williams Hackett Official Team Drivers Racing Cap. Styled with fully embroidered details and complete with changeable fit via the adjustable strap. Features: 100% cotton Machine washable Adjustable Contrarst design: front panel in white, visor sides in blue, with classic Martini stripes in visor.