Engineered for riding extremes, the Sierra's rugged covering not only looks good, but it also withstands the toughest terrain on the trail. It offers excellent ventilation with mesh covered vents. The Sierra is the first all-terrain helmet designed exclusively with trail and Western riders in mind. The Sierra offers riders ASTM / SEI certification coupled with rugged all-terrain looks. The helmet is lightweight, highly ventilated, and very comfortable. Self-locking buckle Low profile Riveted CORDORA® and leather finish Visor Mesh-covered vents CinchFit Pro™ Troxel Sierra Helmet - Black