Road Helmet GIRO ARIES SPHERICAL MIPS — matte black/white, Size M (55–59 cm)

GIRO ARIES SPHERICAL MIPS — matte black/white, Size M (55–59 cm) is a road cycling helmet engineered for on-road riding where impact management, ventilation and fit are important. It combines the SPHERICAL impact management system with MIPS rotational protection to reduce rotational and linear forces transmitted to the head. The helmet in size M fits head circumferences of 55–59 cm and is finished in a matte black and white color scheme suitable for training and racing use.

Advantages

The helmet’s SPHERICAL construction integrates dual-shell layers that allow controlled movement between them on impact, while the MIPS liner addresses rotational forces. This combination improves protection across a range of impacts. The ARIES model provides targeted ventilation channels and internal padding designed for comfort during extended rides. The retention and adjustment system offers a stable, customizable fit for riders within the 55–59 cm range.

Suitable for

• Road cycling training and group rides
• Amateur and competitive road racing
• Long-distance rides where ventilation and comfort matter
• Cyclists seeking a balance of protection, weight and fit

When it may not be suitable

This helmet is optimized for on-road cycling and may not be the best choice for off-road disciplines such as mountain biking that require different coverage and mud-management features. Riders who need an exact fit outside the 55–59 cm range should select a different size.

Key specifications

• Fit range: 55–59 cm head circumference (Size M)
• Impact management: SPHERICAL dual-shell technology
• Rotational protection: MIPS liner system
• Finish: matte black and white
• Ventilation: multiple airflow channels for heat dissipation
• Retention: adjustable fit system with rear adjustment dial
• Comfort: internal removable/washable pads

How to use

Place the helmet level on the head so the front edge sits approximately two finger-widths above the eyebrows. Adjust the rear dial and side straps for a snug, stable fit that prevents excessive movement but does not cause pressure points. Ensure the MIPS liner is properly seated during fitting; do not modify or remove the liner. Replace pads as needed and follow manufacturer guidance for strap routing and buckle closure before each ride.

What to consider before purchase

• Measure head circumference to confirm the 55–59 cm fit range is correct
• Check compatibility with eyewear and any lighting or camera mounts
• Consider helmet weight and ventilation for typical ride duration and climate
• Inspect adjustment range to ensure a stable fit with your preferred hair style or helmet liner

Usage recommendations

Use the helmet for on-road cycling activities including training and racing. Replace the helmet after any significant impact or according to the manufacturer’s recommended service life. Clean the helmet with mild soap and water and avoid exposing it to solvents or high heat.