Find Your Store
Home Page

Cart, contains 0 items

When autocomplete results are available use up and down arrows to review and enter to select. Touch device users, explore by touch or with swipe gestures.
Expert Help
Earn Rewards

Helios Spherical Mips Helmet

4.333333333333333 out of 5 stars
3 Reviews
$149.97 - $249.95
Up to 40% off
Color:Matte Black Fade/Highlight Yellow


Size Chart


Why We Like The Giro Helios Spherical MIPS Helmet

Slotting in just above the updated Synthe MIPS II, the all-new Giro Helios Spherical Helmet serves as Giro’s premium adventure helmet. With Giro calling out the Helio’s primary safety feature in its appellation, it’s clear that the focus of cycling helmet evolution continues to be rider comfort and protection. For those unfamiliar, spherical technology is a brain-child of Bell + Giro Dome in partnership with MIPS. The unique ball-and-socket design, thankfully, is easy to conceptualize. The Helios Spherical is a Progressive Layering system with an inner and an outer liner that can rotate around each other in an impact. All you have to do to visualize this is make a fist, and then rotate your other hand over the fist. The result is a more comprehensive platform for rider protection.

Giro doesn’t stop there, however, as the Helios Spherical is aimed straight at the adventure cyclist with 15 Wind Tunnel vents and channels that run deeply in the underside of the helmet to keep heads cool during epic, route-free riding.


  • New elite-level racing helmet with spherical safety design
  • MIPs brain protection system enhances safety-first construction
  • Full lower Hardbody coverage and Roc Loc 5 Air fit
  • Keep it breezy on warm days with 15 vents and internal channels
  • Reflective decals aid visibility
  • Item #GIRZ338
Complies with U.S. CPSC Safety Standard for Bicycle Helmets for Persons Age 5 and Older, CE EN1078
Fit Adjustment
Roc Loc 5 Air
15 Wind Tunnel vents, internal channeling
Manufacturer Warranty
1 year
Claimed Weight
[medium] 9.5oz (270g)
Shell Material

Overall Rating

4.5 based on 3 ratings

Review Summary

1 Stars - 0 reviews
2 Stars - 0 reviews
3 Stars - 1 reviews
4 Stars - 0 reviews
5 Stars - 2 reviews

Fits Slightly Small

Screen reader users: the following list provides a visual scale to illustrate the product fit. Please refer to the heading above for the fit type in text.
Runs smallTrue to sizeRuns large

What do you think about this product?


Selecting an option will reload the available reviews on the page
3 out of 5 stars

October 25, 2023

Great design, bad sweat management

I've put it through the wringer

Very light and airy design, and the shell within a shell MIPS design is slick - gone are the days when the MIPS helmets all were like a mushroom up top. But compared to a similarly top of the line Bell which I had previously, the sweat management is one of the worst I've used. Really no control of sweat which pours into my eyes either climbing or descending. Disappointing at this price.

John J
5 out of 5 stars

November 2, 2022

This helmet saved my life

I've put it through the wringer

I've used it for about 3 months until I was on a very big car accident. Having this helmet on saved my life and absorbed most of the impact that the car directed towards my face and head. I wouldn't be writting this for sure if I didn't have one of these mips spherical helmets on my head at that time. I definitely will replace the damaged one with another giro but I'm saving it as a "memento mori" and I do recommend giro.

Carlos J

Originally reviewed on

5 out of 5 stars

May 9, 2021

comfortable out of the box

I've used it several times
Size Bought:
5' 10"

I started cycling one year ago and have now cycled 3,200 miles. I am now at a turning point where I learned this past month how to clip into my pedals and have been practicing on paved trails. Now that I am ready to transition back to the main road, clipped in, I wanted the most secure helmet I could find on the market so I purchased this helmet. It is comfortable out of the box and I hope to never find out how the spherical technology works. I trust the Giro brand. They make helmets for skiing and cycling, two riskiest sports. **Update** I have worn this helmet a couple times and find it super comfortable. Love it happy with my black helmet!

Ilana K