10 Best Bike Helmets 2025 in the United States

The Giro Fixture MIPS II is a solid choice for adult cyclists looking for reliable protection and comfort. Its standout safety feature is the integrated MIPS system, which helps reduce rotational forces in a crash, adding an extra layer of security beyond standard helmets. The helmet fits a wide range of head sizes (54-61cm) with its universal sizing and adjustable fit system, making it easy to get a snug, comfortable feel right out of the box.

Ventilation is handled well with 18 vents combined with internal channels to keep airflow consistent, which is great for staying cool during rides. Weighing about 1.65 pounds, it strikes a balance between being sturdy and not too heavy on the head. The construction uses in-molding technology, meaning the outer shell and foam liner are fused, resulting in a durable yet lightweight helmet.

The Matte Hedge Green color and mountain-style design offer a modern, versatile look, although the helmet lacks specific visibility features like reflective elements or bright colors for low-light conditions. Riders who often cycle at dawn or dusk may want to add extra lights or reflective gear. This helmet is suited for riders who want a dependable, well-ventilated helmet with advanced safety tech and adjustable sizing, especially for road and mountain biking. It delivers strong protection and comfort for everyday cycling, even if it isn’t the lightest or most visibility-focused option available.

The Giro Fixture II MIPS Mountain Bike Helmet stands out with its commendable features that cater to a wide range of users, from kids to adults. Its universal fit sizing (54–61 cm) ensures that it can accommodate most head sizes comfortably right out of the box, which is a significant convenience. The helmet is also adjustable, allowing for further fine-tuning to achieve a snug fit.

In terms of safety, this helmet is impressive. It is engineered in Giro's leading helmet test lab and incorporates the MIPS (Multi-Directional Impact Protection System), which is designed to provide superior protection by redirecting impact energy during a crash. This makes it a very reliable choice for safety-conscious riders. Ventilation is another strong point, with 18 wind tunnel vents that help keep the rider cool by allowing air to flow efficiently through the helmet.

The helmet's weight, at just 10 ounces, makes it lightweight and comfortable for extended use. The rugged in-molding construction adds durability without compromising on weight. While the universal fit sizing is convenient, it may not be perfect for everyone, and some users might still need to make adjustments for the best fit. Additionally, while the matte titanium color is stylish and modern, it might not appeal to everyone, and options for other colors or designs would be beneficial.

In conclusion, the Giro Fixture II MIPS Mountain Bike Helmet is a strong contender in the bike helmet market, particularly for those prioritizing safety, ventilation, and a universal fit.

The Giro Aries Spherical helmet is designed for cyclists who want a lightweight, well-ventilated, and highly protective helmet. It uses innovative Spherical Technology combined with MIPS, which is known to help reduce rotational forces during impacts, making it a strong choice for safety. Its unique internal structure, called AURA II, adds strength without extra weight, and it’s about 5% lighter than Giro’s previous Aether model, which helps reduce neck strain and fatigue during long rides.

Ventilation is excellent thanks to large vents and deep channels that keep air flowing to cool your head, plus a sweat management system that directs moisture away from your forehead, keeping you comfortable. The helmet is adjustable, allowing for a secure and custom fit, which is important for both comfort and safety. Style-wise, it has a sleek, compact design aimed at reducing wind resistance, which could benefit riders who prioritize speed.

This helmet comes only in a large size, making it best suited for adults who fit that size range. While the matte white color looks clean and modern, it doesn’t include extra visibility features like reflective elements or built-in lights, which some riders might prefer for low-light conditions. This helmet is a solid pick for serious cyclists looking for advanced safety features, good airflow, and a light, comfortable fit, but sizing and visibility needs should be considered before purchasing.