Giro Aether MIPS II.
Two separate shell layers rotate independently during impact for rotational protection without a traditional MIPS cage, with deep internal channeling.
The Verdict.
Gavler Meta-Score
“Spherical MIPS is the most elegant solution to rotational protection — no internal cage, no hot spots, no compromise on ventilation. The Aether MIPS II delivers this technology in a helmet that ventilates brilliantly at all speeds and fits securely on a wide range of head shapes. It's the complete road helmet package.”
The Gavler Verdict
Precision Engineering
Spherical MIPS
Dual-shell design rotates independently during impact — rotational protection without a traditional MIPS cage.
Deep Channeling
Internal channels direct airflow at all speeds, including the low speeds during climbs where cooling matters most.
Size-Specific Molds
Distinct EPS shell molds for each size ensure optimal protection and fit rather than one-shell-fits-all.
Technical Specifications
The Scoreboard
Spherical MIPS technology and ventilation performance receive consistent praise. Size-specific shell molds are noted as a fit advantage over one-shell-fits-all competitors.
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Best Price Availability.
Prices checked April 2026
Price History
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$260
30-Day High
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Current
$260
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Global Critique
“The advantage of Spherical MIPS over a traditional MIPS liner is that there's no obstruction to ventilation — two EPS shells rotate independently with internal air channels in between.”
“One of the best-ventilated helmets in Giro's lineup, with some of the largest vents of any model and an intricate internal channel system — testing showed it runs cooler than the Synthe MIPS.”
“An elegant helmet with excellent ventilation and easy adjustability, though its high-end features are offset by a slightly higher weight and a much higher price.”
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