POC Tectal Race Spin MTB HelmetPOC Tectal Race Spin MTB Helmet With features from several of POCs award winning helmets, and a unibody shell construction first introduced in our groundbreaking Octal road helmet, the Tectal Race SPIN provides protection and ventilation on a previously unseen scale for mountain bike riders. With the inclusion of SPIN (Shearing Pad INside), our patent pending silicone pad technology system, the helmet further builds on our whole helmet approach to