- Troxel Sirra Riding Helmet
- Durable nylon and leather covering ensures shell remains unscathed
- SureFIt Pro system and Air-Channel headliner provides comfortable and adjustable fit all day
- Certified by ASTM/SEI
- XS (63/8 - 65/8), S (63/4 - 67/8), M (7 - 7 1/8), and L (7 1/4 - 7 1/2)
Troxel low profile Sierra western helmet the Sierra helmet has been completely redesigned with an entirely new low profile, but will be instantly familiar to the hundreds of thousands of Sierra helmet owners around the world. Engineered for riding extremes, the sierra's new rugged nylon and leather covering not only looks good, but also withstands the toughest terrain on the trail. Features: sure fit Pro fit system self-locking buckle rugged nylon .
