Giro Aerohead Mips II Cycling Helmet

Aerohead II Mips® is our most aerodynamic time trial helmet ever, designed with CFD and VR, and proven in the wind tunnel with the world's fastest riders on Team Visma

The Aerohead II Mips® represents the pinnacle of aerodynamic helmet engineering, refined through computational fluid dynamics, virtual reality modelling, and extensive wind tunnel validation with two-time Tour de France champion Jonas Vingegaard. Its Mips® Air Node technology delivers lightweight ventilation whilst managing rotational impact forces, exceeding CE and CPSC safety certifications. The magnetically secured oversized eye shield sits clear of your face, promoting optimal airflow across the brow and through the Roc Loc® 5 Air fit system for enhanced comfort during sustained efforts. Dual eye shields—Clear and Vivid® Smoke—adapt to varying light conditions, whilst the included padded carrying pod ensures protection during transport. Purpose-built for time trialling, this helmet transforms aerodynamic advantage into measurable performance gains.

• The two‐piece shell combines a tough outer hard shell with a polycarbonate lower shell permanently fused to the liner for durability without excess weight.
• The Mips® Air Node system is a low‐friction layer laminated onto the base of the comfort padding, and is a lightweight and highly ventilated solution to reduce rotational energy. It is connected to the energy‐absorbing liner with nodes of hook‐and‐loop fabric touch fasteners. At angled impacts, the nodes are designed to release locally, allowing the padding to slide and reduce rotational motion to the head.
• In addition to helping to optimize stability and cooling airflow through the helmet, the micro‐adjustable ergonomic and compact dial allows riders to adjust vertical positioning and tune the contact points independently for a customized fit with exceptional comfort.
• Our proprietary Super Fit sizing system is based on "human scale factors" data and over 25 years of handcrafting helmets. By creating helmet molds in up to 4 adult sizes to match the human body's form, our Super Fit sizes comfortably and securely fit riders, and feel like they are custom made just for you.
• Giro helmets are developed utilizing our proprietary Wind Tunnel™ventilation system. This elaborate design combines active vents in the helmet's shell with exhaust channels inside the helmet that thrust fresh, cool air over and around the rider's head while forcing heat and stale air out. It's the most effective cooling system available, and a difference you can feel every time you ride.
• Pure Silver is the secret ingredient that gives IONIC+® the power to provide natural, permanent odor protection to keep your helmet feeling fresh.
• The inner liner of the helmet is aggressively engineered to assist air flowing through the helmet, working in conjunction with our Wind Tunnel vents to provide an easy pathway for cool air to flow in and hot air to exhaust out.

Complies with the US CPSC Safety Standard for Bicycle Helmet for Persons Age 5 and Older;450g (size Medium CPSC; CE)

Bike Helmet Size Guide

How to measure your size – Wrap a measuring tape around your head, keeping the tape level from front to back. Note the measurement and reference the Size Guide. Note: Make sure the helmet fits with a little room when the fit system is loose, and sits low enough to protect your forehead without hindering your vision. Once you’ve got the right size, you can adjust the fit.