From the elegant silhouette of its industrial design, to how this helmet manages impact forces, the Aether Spherical is a testament to performance innovation. Inside the Aether Spherical, a dual-density EPS foam liner helps manage a wide range of impact energies, while also boasting deep internal channeling to provide cooling airflow. Giro ́s proprietary Spherical Technology is integrated between the layers of EPS foam, instead of against the rider's head, giving riders the benefits of Mips without obstruction to comfort or cooling power. The stunning silhouette is formed by a sleek six-piece shell that surrounds a series of massive vents, with added structural reinforcement via a shatter-resistant AURA reinforcing arch. The final touch is Giro ́s Roc Loc 5+ Air fit system, featuring 3-way fit tuning, that allows for easy adjustment in seconds. MIPS SphericalMIPS Spherical is a refinement and evolution of the Multi-Directional Impact Protection System (MIPS). With this sophisticated design, two layers of EPP foam fit together like a ball-and-socket. This system helps protect the brain from rotational energy by allowing up to 10- to 15- millimetes of relative motion between the helmet and head during the first milliseconds of an impact.