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.
Cast Your Vote
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Best Price Availability.
Prices checked April 2026
Global Critique
“Spherical MIPS is the most comfortable rotational protection system we've tested. No cage, no compromises.”
“The Aether ventilates brilliantly at all speeds — including the slow climbs where most helmets overheat.”
“Giro's size-specific molding ensures a perfect fit that one-size-shell competitors can't match.”
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