POC Sinuse SL Ski HelmetPOC Sinuse SL Ski Helmet XS The POC Sinuse SL ski race helmet is based on their award winning Receptor concept and includes a detachable chin guard that makes it ideal for slalom racing. The VDSAP construction uses two overlapping shells to provide protection against sharp objects whilst allowing for ventilation. Detachable and adjustable chinguard VDSAP overlapping construction ABS outer shell Polycarbonate EPS inner liner Built in ventilation