Mizuno impermalite hyper rain jacket navy the hyper takes storm busting protection to a new level of comfort and fit ndash with a lighter softer evolution of mizunorsquos own japanese made impermalite 10 000mm waterproof fabric soft and sleek against the body the hyper also features an intelligent waterproof membrane which physically responds to colder conditions ndash retaining a greater proportion of body heat when most needed the hyper is mizunorsquos highest level of japanese e