Lightweight and super airy, the Leatt MTB Trail 2. 0 Helmet is one of our favorite helmets for speedy XC and gravel riding. 20 vents are bolstered by MaxiFlow air channels molded into the foam, giving us maximum airflow at any speed, and the Dri-Lex liner helps keep sweat out of our eyes when the pace and temperatures climb. While we hope all of our rides go as planned, sometimes a crash can derail even the best rides, so when the dreaded over-the-bars event happens, 360 Turbine Technology helps absorb energy on impact and reduce the rotational acceleration transmitted to our heads and brains.