We’ve read the reviews across the web for the Giro Synthe Helmet and summarize the results below:
Universal Ranking
PeakScore: 93 (out of 100)
User Rating: 4.7 stars 
Expert Rating: 4.5 stars
Number of Ratings Reviewed: 72
Pros & Cons
Reasons to buy:
User Reviews
- High durability.
- Easy adjustment and uncomplicated.
- Less wind noise than other models.
- Less heat build-up during hotter days.
- The mesh frame forms to your head shape.
- Stylish look.
- No pinching or pressure points in the helmet.
- Adjustment is easy with a twist of the dial at the back of the helmet.
- The fit is reliable and stable.
Expert Reviews
- The Roc Loc Air system fits most head shapes.
- The expanded polystyrene (EPS) body of the helmet is raised a little bit off of your head, promoting air flow and breathability.
- The drag is reduced by covering the side vents.
- The helmet is one of the lightest on the market.
- 26 wind tunnel vents.
- Internal channels to aid in the functionality of the vents.
- Reduced frontal area has given it a more streamlined look.
Reasons NOT to buy:
User Reviews
- The strap does not reach as far to the back of the helmet as other models do, limiting the adjustability.
- Runs a bit small compared to other Giro models.
- The strap is comprised of nylon and polymer, which may irritate some.
Expert Reviews
- Expensive.
Summary:
The Giro Synthe Helmet is a lightweight, breathable, and aerodynamic option that is suitable for most cyclists. The easy adjustability and performance-driven design make this a good choice for serious athletes performing in training or road racing.