The Giro Eclipse Pro
Speed You Can Feel. Protection You Can Trust.
Born in the Wind Tunnel
The Giro Eclipse Pro didn't start as a sketch on a whiteboard. It started in Giro's in-house R&D lab — shaped through extensive CFD analysis, iterative clay modeling, and wind tunnel testing by designers Ash Lewin and Garrett Tollette. The result is the fastest road helmet Giro has ever made, and it's not close.
Jonas Vingegaard wore a pre-production version to win the 2025 Vuelta a Espana. Pauline Ferrand-Prevot wore it to the General Classification at the Tour de France Femmes. More than 20 WorldTour victories later, it's finally available to the rest of us.
The Aero-Cooling Paradox
Most aero helmets ask you to choose: speed or ventilation. Seal the vents and you go faster — but you overheat on any climb longer than five minutes. The Eclipse Pro rejects that tradeoff entirely. Giro's engineers designed a helmet that is 17% faster than the outgoing Eclipse Spherical while simultaneously improving airflow and thermal management.
At a stated 280 grams for a medium, it's lighter than many competitors' fully-vented climbing helmets. Speed, cooling, and low weight — without compromise.
17% Faster. 280 Grams. Zero Compromises.
The Eclipse Pro's aerodynamic gains aren't marginal. Giro's internal testing shows a 17% reduction in drag compared to the Eclipse Spherical — a helmet that was already among the fastest on the market. The final silhouette smooths airflow across critical transition zones while remaining stable in crosswinds and at high yaw angles.
But the number that might matter more is 280 grams. That's a size medium, CPSC certified. Lighter than helmets that sacrifice ventilation to save weight, faster than helmets that sacrifice speed to stay cool.
Details That Disappear in the Wind
The Eclipse Pro has the kind of refined presence that serious equipment should — clean transitions, purposeful shapes, and a compact silhouette that looks fast from every angle. Every vent placement, every surface contour, every internal channel was validated in the wind tunnel.
It's the rare helmet that looks as fast as it actually is.
Spherical Technology Powered by MIPS
Two EPS foam liners — one inside the other — separated by a low-friction interface. In a crash, the outer liner rotates around the inner liner, redirecting rotational forces away from your brain. No plastic cradle against your scalp, no slip-plane friction. Just a ball-and-socket system that works when it matters most.
The Technology Inside
Shatter-resistant, translucent twin bridges run throughout the helmet — providing structural integrity that enables massive vents without compromising impact protection. Optimized for a 30-degree riding angle with chamfered leading edges for cleaner airflow.
Fifteen vents work with a redesigned internal channeling architecture to actively guide cool air through deep intake ports and across your scalp. Clean air flows over the helmet; cool air flows through it.
Dual-density Nanobead EPS foam addresses both high-speed and low-speed impacts. Harder density on the outer shell absorbs major forces; softer density on the inner shell manages the everyday bumps. More comprehensive energy management across the full range of impact scenarios.
A patented design that suspends the helmet just slightly off the top of your skull — creating an air gap that lets cool air pass directly over your head. One-hand micro-adjustments for tension and fore-aft tilt. Dialed fit in seconds.
A hidden silicone bead inside the plush brow pad redirects sweat away from your forehead and toward your temples, where it evaporates faster. No more stinging eyes on hot climbs. No more wiping your brow every thirty seconds.
15 Vents and a New Way to Breathe
Most aero helmets treat vents as a necessary evil — something that slows you down but keeps you from overheating. Giro flipped the approach. The Eclipse Pro's 15 Wind Tunnel vents are part of the aero strategy, not working against it. Deep intake ports at the front pull cool air in; internal channels guide it across your scalp; exhaust ports at the rear flush the heat out. The centre vent splits airflow across your forehead and over your brow — cooling you and smoothing the air simultaneously.
Fit That Floats
The Roc Loc 5.5 Air retention system doesn't just hold the helmet on your head — it suspends it slightly above your skull. That air gap is the secret to the Eclipse Pro's thermal performance. Cool air from the vents doesn't hit foam; it hits your scalp directly. One-hand adjustments let you dial tension and fore-aft tilt in seconds, even mid-ride. The fit runs slightly compact, so try it on before committing — but once it's dialed, the Eclipse Pro locks in and disappears.
A Shell Built for Real Impacts
The Eclipse Pro's reinforced polycarbonate shell extends further around the EPS liner than its predecessor — more coverage where riders actually hit the ground. Inside, Progressive Layering uses dual-density Nanobead EPS foam: harder on the outside for high-energy crashes, softer on the inside for lower-speed impacts. Combined with Spherical MIPS rotation, it's a three-layer protection system that addresses the full spectrum of what can go wrong.
Proven at the Highest Level
The Eclipse Pro debuted at the 2025 Tour de France on Jonas Vingegaard's head — months before it was available to anyone else. Since then, it's racked up more than 20 WorldTour victories: Vingegaard's GC win at the Vuelta a Espana, Wout Van Aert's stage win in Montmartre, Pauline Ferrand-Prevot's GC at the Tour de France Femmes, and XCM World Championship titles for Alessandra Keller and Kate Courtney. This is a helmet that's been validated on the hardest stages in professional cycling.
Integrated Eyewear Docking
Two prominent vents along the front edges double as secure ports for storing your sunglasses. Quick to dock, stable at speed, and positioned where they won't interfere with ventilation or the Aura II arch.
IONIC+ Antimicrobial Padding
Pure silver-infused padding provides permanent, natural odor protection — not a chemical coating that washes out over time. The padding stays fresh ride after ride, even through the worst of summer.
Reflective Visibility
Reflective decals are built into the helmet's design for added visibility in low-light conditions. Subtle enough that you won't notice them in daylight, effective enough that drivers will notice you at dawn and dusk.
Extended Polycarbonate Coverage
The reinforced polycarbonate shell wraps further around the EPS liner than previous designs — protecting the foam where riders are most likely to make contact with the ground. More real-world durability without adding weight.
Find Your Fit
The Eclipse Pro comes in three sizes — Small (51-55cm), Medium (55-59cm), and Large (59-63cm). The fit runs slightly compact, so if you're between sizes, we'd recommend trying both. Wrap a tape measure around your head just above your eyebrows and ears, note the circumference, and match it to the chart. If you want help, our team can guide you to the right fit.
| Size | Small | Medium | Large |
|---|---|---|---|
| Head Circumference (cm) | 51 – 55 | 55 – 59 | 59 – 63 |
| Weight (stated) | — | 280g | — |
| Certification | CPSC, CE EN 1078 | ||
| Price | $349.95 | ||
