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 MIPS Adult Mountain Cycling Helmet in Matte Trim Blue is a solid choice for mountain bikers. It features a universal fit sizing range of 54-61 cm, making it suitable for a wide range of adults straight out of the box. The helmet meets high safety standards with its integrated MIPS technology, which helps redirect energy during impacts for added protection. Additionally, it is constructed with rugged in-molding that contributes to its durability.

Weighing 16 ounces, it is light enough for comfortable wear during long rides. The 18 Wind Tunnel vents with internal channeling provide excellent ventilation, keeping the rider cool and comfortable. The adjustable features ensure a snug and secure fit, enhancing safety. The bright Matte Trim Blue color not only adds a stylish touch but also improves visibility.

However, some users might find the universal sizing not as tailored as specific size options, and the helmet, although discontinued by the manufacturer, maintains a high market rank in sales. It's a go-to option for those looking for a reliable, stylish, and safe helmet for mountain biking.

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.