Simpson Racing Apex Kart Racing JacketKart JacketThe Apex Kart Racing Jacket from Simpson is designed by the company that invented racing safety in collaboration with karters who know exactly what they need from a jacket. Our ripstop CarbonX sleeve provides heat protection and reinforcement in an area that is prone to heat and stress. An easy to wear rear tuck flap keeps the jacket from riding up during action periods but still looks great out of the kart.