Giro Manifest Spherical Bicycle Helmets

The Manifest Spherical sets a new benchmark for trail and enduro helmets, combining premium impact protection, exceptional ventilation, and a secure, dialed-in fit.

Powered by Spherical Technology with Mips, this helmet features a ball-and-socket design that helps redirect rotational forces during angled impactswithout the need for a plastic slip plane. Ideal for aggressive terrain, long rides, and riders who want advanced safety with comfort to match.

Advanced Impact Protection

• Spherical Technology powered by Mips: The outer liner rotates around the inner liner to reduce rotational forces

• Progressive Layering: Dual-density EPS foam enhances energy absorption across a range of impacts

• In-Mold polycarbonate shell: Lightweight, durable design with full lower hardbody coverage

Ventilation & Cooling

• 19 Wind Tunnel vents with internal channeling for maximum airflow

• AURA reinforcing arch adds strength while increasing air intake

• Keeps your head cool on tough climbs and high-speed descents

Fit & Comfort

• Roc Loc Trail Air fit system: Easy, secure, and adjustable for a precise fit

• Ionic+ antimicrobial padding: Soft, breathable, and sweat-absorbent for lasting freshness

• Fidlock magnetic buckle: Quick, glove-friendly closure

Trail-Focused Features

• Adjustable moto-style visor with screw-in mount

• Eyewear grippers for sunglasses

• Goggle gripper for enduro-style setups

Specs & Certification

• Weight: 340g (Size Medium CPSC, CE)

• Certifications:

  • US: CPSC Bicycle Helmet Standard (Age 5+)

  • EU: CE EN1078

HOW TO MEASURE YOUR SIZE

Wrap a measuring tape around your head, keeping the tape level from front to back. Note the measurement and reference the size guide below.