gpa riding helmet 4s first lady tls black matt4S First Lady Riding Helmet Designed for optimal protection on every ride Built with 4 layers for progressive impact absorption and improved resistance to lateral compression The 4S model is constructed as follows: the first layer is the outer shell, designed to absorb the initial impact. Made from an absorbing polymer, it deforms on impact. The second layer, the 2S, captures and dissipates the impact energy. The third layer, the 3S, is the main