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Giro Aerohead Mips II
Model: Aerohead Mips II Helmet (US style 100000000300000150) · US configuration
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For an adult road-riding assessment scenario at 57 cm, the Aerohead Mips II offers a documented CPSC statement, Mips Air Node and a package Giro describes as including Clear and Vivid Smoke shields plus a padded pod. The circumference chart remains a try-on guide, not a fit guarantee.
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Assessment scenario: Adult road-riding assessment at 57 cm
An editorial scenario for an adult road rider whose measured 57 cm circumference falls in Giro's published Medium guide range. This is a reason to try the exact model, not proof of fit; the Aerohead pages position these products for triathlon or time trial, and the scenario does not mean that was the visitor's stated event.
Explore this buying guide ↗Why consider this model?
- Giro positions the II for time-trial use and documents Mips Air Node, Roc Loc 5 Air, a magnetic oversized shield and Wind Tunnel channeling.
- Giro says each helmet includes two shields (Clear and Vivid Smoke) and a padded carrying pod; its replacement page distinguishes regular and short II shield styles.
- The exact US page states CPSC compliance for persons age five and older; Giro's adult chart puts 57 cm in the Medium 55–59 cm interval.
Tradeoffs to weigh
- The wind-tunnel and aero descriptions are manufacturer claims; no independent drag, time-saving, cooling or fit result is established here.
- The 450 g Medium weight is the manufacturer's figure, not an independent measurement.
- The reviewed evidence is specific to time-trial/triathlon road use and does not establish gravel, mountain-trail, downhill or full-face suitability.
Check these before ordering
- Confirm US style 100000000300000150 and check the exact size, shield colors, padded pod and instructions in the package.
- Inspect the physical CPSC marking and version before buying; do not transfer the II's statement to an older Aerohead Mips style.
- Verify replacement shields are the Aerohead Mips II regular or short version; do not assume older Aerohead shield interchangeability.
- Try the helmet with the intended shield and position, check vision and retention, then review seller return terms and current notices.