Giro Synthe Helmet

Giro Synthe Helmet Info

The Giro Synthe helmet does aero road better. The name comes from synthesis: in this case, synthesizing the aero performance of Giro’s Air Attack and the cooling performance of Giro’s Aeon. Basically, the Synthe does both better.

The aero performance is improved over the Air Attack in the “heads up” position common to riding in a pack. The cooling performance is better than the Aeon. In fact, the Synthe is the coolest helmet Giro has ever tested on their Therminator headform. It’s almost as good as a bare head.

The aero and cooling performance are tied together. The shape is far more compact than the Aeon, with the fewer, larger vents, nineteen in total, leading to larger internal channels. And to help promote airflow, Giro uses their Roc Loc Air secondary retention system to actually keep the helmet off the head. By doing this, airflow is improved around the face and through the internal channels to the exhaust vents.

Helping keep the helmet in place is the primary retention system, which utilizes Featherweight webbing for straps, a slimline chin buckle, and lightweight, adjustable camlock buckles under the ears. Where your head contacts the Roc Loc, X-Static padding contacts the skin and wicks away the sweat.

Cognizant of cyclists desire to have a home for sunglasses on the helmet, they’ve created dedicated ports for sunglass temples to easily get inserted and removed. No tricks, no wiggling, just off your eyes and into the helmet, and vice versa. They are integrated into mesh panels which themselves are drag-reducing features of the helmet.

There’s another benefit to improved aerodynamics. A quieter ride experience. By reducing the turbulence around your head and helmet, the ride will seem not as noisy. You might even find yourself talking in a lower voice because you don’t have to overcome so much noisy air.

The package put together is sixteen percent faster than the Giro Aeon. It possesses eight grams less drag than the Giro Air Attack in when the head is 30-degrees from vertical. It has two percent greater cooling than the Aeon. It’s thirteen percent lighter than the Air Attack. The official weight is 250g for a Medium, but we’ve seen them come in a good bit less.

The Giro Synthe is more aero than aero helmets, cooler than cool, and lighter than light. It does everything to eleven.

Complies with the US CPSC Safety Standard for Bicycle Helmet for Persons Age 5 and Older