Giro Synthe Mips II Bike Helmet
Designed for road and gravel riders alike, the Giro Synthe Mips II bike helmet combines the performance advantages of a compact profile with great cooling power and exceptional comfort.
- Integrated Mips® brain protection system; the goal of integrated Mips-equipped Giro helmets is to reduce rotational forces
- Giro believes that helmets equipped with Mips technology can reduce the amount of rotational force that may be transferred to a rider's brain in certain impacts
- All Giro helmets are designed to reduce as much energy as possible while meeting and exceeding stringent safety standards
- Proprietary Wind Tunnel ventilation system combines active vents in the shell with exhaust channels inside that thrust cool air over and around the head while forcing heat out
- Roll Cage light-yet-tough web of reinforcement is invisibly molded inside the EPS foam liner for extra strength and integrity that helps the helmet hold together under impact
- Micro-adjustable, ergonomic and compact dial allows you to adjust vertical positioning and tune the contact points independently for a customized fit with exceptional comfort
- Dial also helps optimize stability and cooling airflow through the helmet
- IONIC+ padding with pure silver, the secret ingredient that gives it the power to provide natural, permanent odor protection and keeps your helmet feeling fresh
- Size medium weighs 9.7 oz. (275 g)
- CPSC and CE EN1078 certifications
Imported.
| Best Use | Road Cycling |
|---|---|
| Helmet Style | Road Bike |
| Helmet Construction | In-mold |
| Shell Material | Polycarbonate |
| Head Circumference | S: 20-21.7 inches L: 23.2-24.8 inches |
| Vents | 19 |
| Visor/Brim | No |
| Weight | 9.7 ounces |
| Gender | Unisex |
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Nice helmet on sale
Nice helmet on sale, but I was sent one with a bent MIPS liner and will have to return/exchange. To correct the other reviewers: A replacement helmet is recommended after 3-5 years OF USE. A brand-new helmet sitting in it's original packaging, not exposed to wild temperatures, sun, sweat, or sunscreen is fine, and you can begin your 3-5-year countdown after you purchase it.
Old Helmets
REI sent a helmet produced in 2021, these are supposed to be replaced 5 years from production so now this helmet is technically only good for 1 more year...
Light and comfortable
Light and comfortable, good fit
Good buy on sale
Nice helmet that fits well. Unfortunately, I was sent one with a bent MIPS liner, and will have to return/exchange. A note to anyone considering purchasing an older model helmet: Replacement is only recommended after 3-5 years OF USE. A brand-new, unused helmet sitting in its original packaging, not exposed to sun, sweat, and sunscreen is fine.
Old manufacture date
The helmet is great, but it was manufactured in 2021. (I purchased it in March 2025.) Depending on when you retire your helmets this may already be expired. I returned it without an issue.