10 Best Giro Bicycle Helmets 2026 in the United States

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.

The Giro Helios Spherical helmet offers a solid option for adult cyclists seeking a balance of comfort, safety, and ventilation. Its standout feature is the Spherical Technology powered by MIPS, which is designed to improve impact protection by allowing the inner liner to move independently from the outer shell, reducing rotational forces during a crash. The helmet weighs 270 grams for the medium size, making it lightweight and comfortable for longer rides. It features 15 wind tunnel vents with internal channeling, which help keep your head cool even during intense cycling sessions.

The Roc Loc 5 Air Fit System offers an adjustable fit, allowing you to customize how snugly it sits, which is essential for both comfort and safety. This helmet meets key safety standards, including the US CPSC and European CE EN1078 certifications, so it adheres to recognized protection requirements. The polycarbonate shell with hardbody lower shell construction adds durability without too much bulk.

The helmet’s design focuses on ventilation and impact management, though it may feel a bit pricier compared to basic helmets without these advanced features. Also, it’s labeled as a small size here, so make sure to check sizing carefully to ensure a proper fit. This makes the Giro Helios Spherical well-suited for cyclists who prioritize strong safety technology and comfort, particularly those riding frequently or in warmer conditions, but it might be more than casual riders need.

The Giro Eclipse Spherical is a well-designed road cycling helmet that offers excellent protection and comfort for adult riders in the medium size range (55–59 cm). Its standout feature is the spherical technology combined with MIPS, which adds an extra layer of safety by reducing rotational forces during impacts, making it a good choice for those prioritizing safety. The helmet uses dual-density foam to manage both high and low-speed crashes effectively.

Ventilation is strong thanks to 14 vents with internal channels that enhance airflow, keeping your head cool on long rides. Despite this robust protection and airflow, the helmet remains lightweight at just about 1 pound, helping to reduce neck fatigue during cycling sessions. The full lower hardbody coverage adds durability and extra protection around the helmet’s base. The aerodynamic, sleek matte and gloss black design is stylish without sacrificing function.

The medium size is quite specific, so fit may not suit everyone, and with a price and ranking that places it outside the top tier, some riders might find lighter or more budget-friendly options elsewhere. However, with a solid 4.6-star rating from over 100 reviews and a two-year warranty, it is a dependable option for serious road cyclists seeking a balance of safety, comfort, and airflow.