Bicycle Helmet GIRO Quarter FS — size L (59–63 cm), Matte Dark Shark

GIRO Quarter FS — size L (59–63 cm), Matte Dark Shark is a protective bicycle helmet designed for urban riding, BMX and park use. The helmet offers a large fit with full-coverage design that balances impact protection and ventilation for everyday commuting, skill practice and street riding. The Matte Dark Shark finish provides a low-gloss, neutral appearance that pairs with a wide range of cycling apparel and equipment.

Advantages

The helmet combines a durable shell with an energy-absorbing liner to reduce the force transmitted during impacts while maintaining a relatively low weight for longer wear. Its size L fit (59–63 cm) accommodates larger head circumferences and includes an adjustable retention system for secure, customized fit. Ventilation channels help manage airflow to keep the rider cooler during active use. The design emphasizes full-coverage protection suitable for trick riding and aggressive urban cycling.

Suitable for

• Urban commuting and city cycling
• BMX and park riding
• Street and trick practice
• Riders requiring a large helmet size (59–63 cm)

Key specifications

• Fit range: large (59–63 cm head circumference)
• Shell finish: Matte Dark Shark (matte, dark tone)
• Coverage: full-coverage urban/BMX profile
• Retention: adjustable retention system for a secure fit
• Ventilation: integrated vents and airflow channels
• Construction: hard outer shell with energy-absorbing liner

How to use

Measure head circumference at the widest part of the forehead to confirm the 59–63 cm fit range before selecting size L. Place the helmet squarely on the head so the front edge sits just above the eyebrows, then fasten and adjust the retention system until the helmet feels snug but comfortable. Adjust chin strap length and side buckles so the straps form a V under each ear and the buckle rests centered below the chin. Periodically inspect straps, buckles and the shell for signs of wear or damage, and replace the helmet after any significant impact even if no damage is visible.

Usage recommendations

Choose the helmet size that matches your head circumference and follow manufacturer adjustment instructions for optimal fit. Use this helmet for urban, BMX and park riding where full-coverage protection is appropriate; do not use it as a substitute for helmets designed specifically for high-speed road racing or motorized vehicle use.