All Zero Gravity windscreens offer superior optical quality, strength plus flexibility, exceptional fit and finish, plus race-proven performanceDeveloped by Zero Gravity R&D in 1995 for Team ZGs race bikes, the Double Bubble is now seen on race tracks around the worldMade from the finest grade of 1/8in. acrylic plastic. Each windscreen is stretched as it is formed, a process which results in superior strength and flexibility. This flexibility allows the windscreen to absorb road vibrations and resist crackingFormed with a wedge-shaped bubble in the center of the windscreen, the Double Bubble was originally designed to provide superior 'rodynamics for a rider tucked in behind the windscreenAdds a sleek, 'rodynamic look to the exciting designs of todays new sportbikes