Open Back UOF Race Helmet Astm Certified

OPEN BACK HARNESS  SHINY HELMET-Matte harness The Outer shell has a non-slip soft ergonomic design, animated by a curve along its entire circumference. On the front and rear there are two ventilation holes, four in all, protected by super metal grid to guarantee the safety and comfort even in hot weather. Weight: 450/500 gr.The internal shell is made of polystyrene whose density is ideal to absorb impact shock possible, avoiding injuries in case of fall   all custom orders need to sign a Uof waiver as this product is no longer under the new sastre rated rules due to the open back. Only closed backs will be considered saftey rated      La cáscara exterior tiene un diseño ergonómico suave antideslizante, animado por una curva a lo largo de toda su circunferencia. En la parte delantera y trasera hay dos orificios de ventilación, cuatro en total, protegidos por rejilla de metal súper para garantizar la seguridad y el confort incluso en climas calurosos. Peso: 450/500 gr. La cáscara interna