GP-1 (Custom)REDEFINE THE STANDARD. PROTECT. VENTILATE. DOMINATE. PROTECTION FROM THE GROUND UP Built for all out efforts in mud, over cobbles, through the gravel, dirt, rain and fog. Built for all out efforts in mud, over cobbles, through the gravel, dirt, rain and fog. The GP 1 was born out of direct work with the best world tour cyclists, to solve the problems they face in extreme race conditions. Tough enough for Paris Roubaix, but versatile enough for the