Featuring Spherical Technology and Mips® Brain Protection System, the Giro Women's Merit Spherical is perfect for trail riding and hard pedaling. Separate inner and outer liners with Progressive Layering absorb high- and low-speed impacts. Massive Wind Tunnel vents plus EPS foam liner channels ensure optimal heat release during long, hot climbs. Adjustments and stability are rapid w/ Roc Loc® Trail Air; plus Ionic+ padding with permanent antimicrobial properties absorbs sweat and combats odor.