POC Tectal Race Spin Helmet Uranium Black HelmetThe POC Tectal Race SPIN helmet provides protection and ventilation on a previously unseen scale for mountain bike riders. With the inclusion of SPIN (Shearing Pad INside), POC ' s patent pending silicone pad technology system, the Tectal Race SPIN helmet further builds on POC 's whole helmet approach to design and construction in order to deliver superior levels of comfort, fit and performance. Other safety features include an aramid bridge system