With spherical technology, best-in-class ventilation, deep coverage and luxurious comfort, the Manifest Spherical Mountain Bike Helmet is the most premium trail-riding helmet available. Among the Manifest's extraordinary features is Spherical Technology, which utilizes a ball-and-socket design powered by MIPS®, the market-leading brain protection system that helps to reduce rotational forces. Spherical Technology allows the outer liner to rotate around the inner liner during a crash and also eliminates contact with a hard-plastic slip-plane. In addition to leading head protection, the Manifest offers wide-open airflow thanks to the AURA reinforcing arch, which bolsters structural integrity while allowing air to flow into the massive Wind Tunnel vents. You'll also get a comfortable, secure fit with the easy fit and positioning adjustments built in to the Roc Loc Trail Air fit system and plush, antimicrobial XT2 padding for exceptional sweat absorption.