The Oakley ARO7 MIPS PRIZM lens helmet is designed to offer maximum aerodynamics, inspired by the shape of racing cars. Chosen by professionals for time trial and triathlon races, it features a magnetic visor attachment system and reverse magnetic storage. The 360º BOA adjustment system ensures a secure fit, while the MIPS head protection system increases safety in angled impacts. The compact design offers freedom of movement without compromising aerodynamics. Fidlock magnetic closure with buckles. Includes hard case. Contains EPS protective foam.Features:Material: polycarbonateWeight: 435 gTechnologies:MIPS: MIPS is a leading technology in flat displacement within the helmet, designed to reduce rotational forces that can result from certain impacts. When a head rotates rapidly and comes to a sudden stop, rotational acceleration can cause high levels of tension in brain tissue.