Troxel Sierra Denim Western Riding Helmet 04-366 ZDS. Sierra Denim Western Riding Helmet 04-366~@The Sierra offers riders ASTM /SEI certification coupled with rugged_ outdoor Western styling. The helmet is designed to be ultra-lightweight_ extremely well ventilated_ and comfortable for long days in the saddle. The Sierra is the perfect Western headgear for those who want comfort_ Western styling_ and Troxel's leadership in protection. ~@~@ADJUSTING SYSTEM: GPS IIITM~@The patented GPS III system introduces the most advanced stabilization and fit adjustment... - Troxel Sierra Denim Western Riding Helmet 04-366 ZDS. | 
