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Giro Source Mips
Model: Source Mips, US style 100000000500000098 · US configuration
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Source Mips is a trail half-shell to compare in this 57 cm assessment scenario if a size fits after try-on. Its exact page documents deep coverage, 17 vents and an adjustable visor, but not a CPSC statement.
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Assessment scenario: Adult trail use at 57 cm, multi-size comparison
Assessment scenario only, not a claim about your intent: an adult compares reviewed MTB half-shells for trail riding with a measured 57 cm circumference and no added CPSC or Spherical/Mips filter. A chart range is only a reason to try on the exact model, not a fit result.
Explore this buying guide ↗Why consider this model?
- The exact US style 098 family is listed in Giro's MTB collection and described as an open-face, trail-ready helmet.
- The S–XL chart intervals span 51–65 cm; 57 cm is within that screening range but does not establish a secure fit.
- Giro documents 17 vents, deep internal channeling, Roc Loc 5 Mips and a tool-free adjustable visor.
- The size-M weight stated by Giro is 340 g, distinct from the other models' published figures.
Tradeoffs to weigh
- The exact page lists CE EN 1078 but does not state CPSC compliance; the matcher treats this as unknown.
- A 17-vent specification is not a comparative cooling test or proof of superior ventilation.
- The page does not establish individual fit shape or a Spherical/Mips design.
Check these before ordering
- Verify exact US style 100000000500000098, the intended size/finish and the package's visor components.
- Check the physical helmet label and current documents if CPSC evidence is essential; do not rely on an adjacent Giro model's statement.
- Try on the exact helmet with planned eyewear and review seller condition and return terms.