10 Best Giro Bicycle Helmets 2025 in the United States

The Giro Fixture MIPS Adult Mountain Cycling Helmet in Matte Trim Blue offers a solid choice for adult cyclists, particularly those involved in mountain biking. One of its primary strengths is the market-leading protection, thanks to Giro's advanced testing lab and the integrated Multi-Directional Impact Protection System (MIPS), which helps redirect energy during a crash, enhancing safety significantly.

The helmet's ventilation system is another standout feature with 18 wind tunnel vents and internal channeling, ensuring that you stay cool during intense rides. Additionally, the in-molding construction contributes to its durability and ruggedness, making it suitable for challenging terrains. The universal fit sizing is convenient, allowing users to get a comfortable fit right out of the box without much hassle.

The adjustable wide sizing range accommodates various head sizes from 54 to 61 cm, which is a practical feature for adults of different ages. However, while the helmet is relatively lightweight at 1 pound, some users might prefer an even lighter option for extended wear. The helmet is discontinued by the manufacturer, which might limit availability or support in the future. In summary, the Giro Fixture MIPS helmet offers reliable protection, excellent ventilation, and a comfortable fit, making it a great choice for mountain cyclists, despite potential limitations in weight and future product support.

The Giro Tremor MIPS Unisex Youth Cycling Helmet is designed with a focus on youth cyclists. It features an integrated MIPS Protection System that adds an extra layer of safety against certain impacts, which is a significant advantage for young riders. The helmet offers a Universal Fit Sizing, making it easy to get a good fit right out of the box, which is convenient for both parents and kids.

The 18 vents provide excellent ventilation, helping to keep the rider cool during long rides. Weighing only 1.5 pounds, it is lightweight, enhancing comfort during use without compromising on durability due to its in-mold construction that fuses the polycarbonate outer shell with the interior liner. On the downside, since it's a discontinued model, finding replacements or additional parts could be challenging.

With its matte black color and sleek design, it appeals to both boys and girls, making it a versatile choice. Because it meets high safety standards, it is a reliable option for youth cyclists.

The Giro Aries Spherical Bike Helmet in Matte White (Large) is designed with both performance and safety in mind. Fit-wise, it is adjustable, ensuring a secure and comfortable fit for adults. The helmet incorporates the proprietary AURA II Reinforcement Arch, which provides structural integrity without adding unnecessary weight. This contributes to its relatively light weight of 10 ounces, making it comfortable for long rides.

In terms of ventilation, the Aries excels with deep internal channels connecting massive front and rear vents, allowing excellent airflow to keep the rider cool. Additionally, the DryCore sweat management system effectively redirects sweat to reduce discomfort during intense activities. Safety is a top priority with this helmet, featuring Spherical Technology powered by MIPS, which helps redirect impact forces and reduce the risk of injury. The Progressive Layering of EPS foam addresses a wide range of impact energies, offering enhanced protection.

The helmet's streamlined design also reduces aerodynamic drag by 4% over previous models, contributing to faster speeds. Potential drawbacks include its higher price point and the fact that some users may find the adjustment mechanism slightly fiddly. However, with a high customer rating of 4.6 out of 5 stars, it is well-regarded for its comfort, safety, and innovative features, making it ideal for serious cyclists looking for a high-performance helmet.