Ride Now, Pay Later—Financing Offered Through Klarna
This carousel displays a list of buttons that updates the main product image when a button is clicked
  • Options
  • Detail Images

GiroManifest Spherical Helmet


Item # GIRZ32Y

Select options
  • Cancel
  • Select options
  • Matte Sage, L ($259.95)
  • Matte Sage, S ($259.95)
  • Matte Sgae, M ($259.95)
  • Matte Black, L ($259.95)
  • Matte Black, M ($259.95)
  • Matte Black, S ($259.95)
  • Matte Blue/Midnight, L ($259.95)
  • Matte Blue/Midnight, M ($259.95)
  • Matte Blue/Midnight, S ($259.95)
  • Matte Grey, L ($259.95)
  • Matte Grey, S ($259.95)
  • Matte Olive, L ($259.95)
  • Matte Olive, M ($259.95)
  • Matte Olive, S ($259.95)
  • Matte White, L ($259.95)
  • Matte White, M ($259.95)
  • Matte White, S ($259.95)
  • 100% Guaranteed Returns
  • Free Shipping on orders over $50

Item # GIRZ32Y

Manifest Spherical Helmet

The Manifest Spherical Helmet premieres Giro's revolutionary Spherical Technology for enhanced safety on the trail. Powered by MIPS, Spherical Technology utilizes a similar slip-plane design as MIPS for greater impact absorption at angular crashes, except Spherical opts for two layers of foam with a slip-plane between the two, instead of a plastic liner. This redirects impact energy by rotating the exterior liner independently from the interior liner, and it enables greater ventilation for a cooler time on the trail as well as a safer one.

Giro geared the Manifest for sweaty riding in hot weather with nineteen Wind Tunnel vents, all amplified thanks to Aura's reinforcement around the arch. XT2 padding provides a comfortable fit, and the lining wicks sweat, dries quickly, and reduces any unwanted odors. Giro also redesigned the Roc Loc Trail Air Fit System for enhanced durability and dynamic strength. The visor adjusts to accommodate eyewear and goggles, and Giro included grippers to make sure either stay in place.

  • Giro's premiere bike helmet for trail and all-mountain
  • Spherical Technology powered by MIPS for advanced protection
  • Progressive layering addresses high- and low-speed impacts
  • Aura reinforced arch encourages airflow through 19 channeled vents
  • Adjustable visor with goggle and eyewear grippers
  • Roc Loc Trail Air Fit System includes magnetic buckles
  • Quick-dry padding with XT2 odor control
  • Ages 5 and older

Tech Specs
Shell Materialin-mold
Ventilation19 Wind Tunnel vents with internal channeling
Fit AdjustmentRoc Loc Trail Air
Visoradjustable, screw-in
Recommended Usemountain bike
Manufacturer Warranty1 year


Adult Cycling Helmets
Super Fit™
Head Circumference

18.5 - 20in

(47 - 51cm)

20 - 21.75in

(51 - 55cm)

21.75 - 23.25in

(55 - 59cm)

23.25 - 24.75in

(59 - 63cm)

24 - 25.55in

(61 - 65cm)

Head Circumference

21.25 - 24in

(54 - 61cm)

19.75 - 22.5in

(50 - 57cm)

22.75 - 25.5in

(58 - 65cm)

How to Measure:
For best results, use a tape measure to measure around your head where your hat would fit comfortably.

What do you think about this product?


>Rating: 4

Comfortable and protective

I've used it several times
True to size
Size Bought

This is a great helmet which I purchased mainly to protect my eyes from the sun and wind because of the visor. It covers my head completely and feels safe and comfortable. I am still having difficulty with the magnetic fastener which is why I List 4 stars. I’ve always worn Giro helmets, however this fastener is not intuitive and many times I miss locking it completely unless I look in the mirror. If it wasn’t such a comfortable, good looking and egg-covering helmet I would have sent it back due to the fastener. My husband liked it a lot and bought one also.

>Rating: 5

Great Helmet

I've used it several times
True to size
Size Bought
6` 2"
190 lbs

This helmet fits great it is very stylish. I really like the mag buckle as it’s easy to attach and detach. The vents are great for getting air over the noggin It’s definitely on the pricey side but you get what you pay for.