Inside the Helmet Worn by Champions

The new Eclipse Pro is Giro’s fastest helmet to date—and the proof is on the podium. In 2025, early prototypes went straight from the lab to the race course, propelling Wout van Aert to his stunning victory on the Champs-Élysées and Pauline Ferrand-Prévot to dominance at the Tour de France Femmes avec Zwift.

In fact, over the past year, the Eclipse Pro has become the winningest helmet on the Giro roster. We’ve seen it at the Tour de France. We’ve seen it at the XC Marathon World Championships. Now that the Eclipse Pro has officially hit the market, its race-winning speed and protection are within reach for everyday riders.

But how did we get here? And how did Giro whip up something that’s both lighter than many climbing-specific options and better ventilated than most road-specific aeros?

It’s all in the engineering. The design process for the Eclipse Pro was meticulous: numerous prototypes, high-tech fluid-dynamics simulations, rigorous wind tunnel testing, and round after round of rider feedback. All the work paid off—to the tune of 17% aerodynamic gains over the previous generation of the Eclipse.

What might be most impressive, though, is the helmet’s shockingly light weight (just 280 grams) and its dramatic improvement in ventilation—rare in aero road helmets. The secret is a whopping 15 vents interconnected with a proprietary system that actively cools the head. Strategically placed exhaust ports at the back of the helmet pull fresh air through the intake channels at the front, sucking fresh air across the scalp and siphoning away sweat vapor.

The sweat management doesn’t stop there. Silicone beading along the brow helps redirect moisture away from the eyes, and the helmet’s internal structure suspends it slightly off the head, creating a gap for airflow over the skin’s surface. The system all but eliminates drippage, letting you keep your hands on your handlebars and your eyes on the road. Another nice touch: Silver ions in the lining resist bacterial growth, and therefore odor.

That’s a lot of engineering in a small, lightweight package, and you’d be forgiven if you started to wonder about the safety of the thing. Not to worry. From the beginning, Giro designed the Eclipse Pro around industry-leading and proprietary Spherical Mips technology, which uses a clever ball-and-socket design to protect the brain. The helmet’s outer shell rotates independently of the inner shell during a crash, shunting impact forces over the skull and away from its delicate contents. As a bonus, the design prevents hard plastic and slip planes from ever contacting the skin, enhancing comfort and safety in one fell swoop. A shatter-resistant Aura II Arch further reinforces the helmet’s structure, and dual-density foam absorbs impact from smaller bumps and knocks.

This combo of astonishing speed and outstanding safety is exactly what speed-hungry pros need to race hard with confidence. So, when Giro says this is a helmet designed to win, we can’t fault them for the claim. Because that’s exactly what it’s doing.

We Design For Sport. At Giro, we strive to build products that empower the fastest athletes to perform at the highest level. We destroy more test helmets than some brands build, obsess over the details, and pour years of sweat into our products so Giro is there when you need us most.