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  • Giro Aether MIPS Helmet
  • Giro Aether MIPS Helmet
  • Giro Aether MIPS Helmet
  • Giro Aether MIPS Helmet
  • Giro Aether MIPS Helmet
  • Giro Aether MIPS Helmet
  • Giro Aether MIPS Helmet
  • Giro Aether MIPS Helmet
  • Giro Aether MIPS Helmet
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GiroAether MIPS Helmet
$324.95 - $344.95

Item # GIR00JZ

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  • Matte White/Silver,S ($324.95)
  • Matte White/Silver,M ($324.95)
  • Matte White/Silver,L ($324.95)
  • Matte Black,S ($324.95)
  • Matte Black,M ($324.95)
  • Matte Black,L ($324.95)
  • Olive/Citron,S ($324.95)
  • Olive/Citron,M ($324.95)
  • Olive/Citron,L ($324.95)
  • Matte Bright Red/Dark Red,S ($324.95)
  • Matte Bright Red/Dark Red,M ($324.95)
  • Matte Bright Red/Dark Red,L ($324.95)
  • Highlight Yellow/Black,S ($324.95)
  • Highlight Yellow/Black,M ($324.95)
  • Highlight Yellow/Black,L ($324.95)
  • Matte Citron/White,S ($324.95)
  • Matte Citron/White,M ($324.95)
  • Matte Citron/White,L ($324.95)
  • Matte Blue,S ($324.95)
  • Matte Blue,M ($324.95)
  • Matte Blue,L ($324.95)
  • Matte Black Flash,S ($344.95)
  • Matte Black Flash,M ($344.95)
  • Matte Black Flash,L ($344.95)
  • Matte Black/Pearl,S ($324.95)
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Item # GIR00JZ

Exceeds all expectations.

When Giro set its aim at designing the groundbreaking Aether MIPS Helmet, it's goal was to create the safest road helmet it could, without making any sacrifices to weight, comfort, aerodynamics, or ventilation. In typical Giro fashion, it exceeded expectations at every objective and the Aether provides the discerning cyclist a stylish lid with absolutely zero compromises. You'll certainly notice them atop the Team BMC pros at this year's Tour, providing them with the protection they need during the chaotic sprint finishes that define the start of the 3-week race, and while plummeting down high-speed descents on exposed, narrow, hairpin roads, all the while keeping them from overheating while the sun bakes down on the French countryside. 

The most revolutionary feature on the Aether is the all-new MIPS Spherical protection system. By now, we're all pretty familiar with how standard MIPS works, using a plastic liner inside the helmet to act as a slip-plane, helping to redirect the impact energy at certain angles. With MIPS Spherical, the principles are the same, however, instead of that slip plane sitting against your head, often compromising the fit and choking off much-needed ventilation, two layers of foam on the outside of the helmet slide against one another becoming the essential components allowing for the MIPS mechanics.

The progressive layering of the multi-density EPS foam allows Giro to save weight with the impact absorbing material and its covered by a 6-piece polycarbonate shell. Its laser cut with surgical-like precision that's required for MIPS Spherical to properly work, and even the logo permanently molded as part of the shell, no cheap sticker afterthoughts. The shell has 11 vents, which on paper doesn't sound like much, but they are huge and conspire with the deep channeling inside, again afforded by moving the MIPS Spherical on the outside, to move air over your scalp, keeping you cooler while racing or doing some tempo intensity workouts during the hottest part of the day. With those massive vents, Giro needed to bolster the structural integrity of the shell and does so with the translucent, shatterproof Aura arch which melds seamlessly with the helmets aesthetics. The last shell feature worth noting is the integrated eyewear docking port letting you remove and secure your sunglasses when daylight is fleeting or on particularly stifling climbs.

Among many, one area where Giro is truely class leading is in its fit retention system and The Aether gets its latest with the Roc Loc 5 Plus. We love its ability to adjust the fit on the fly with precision and just one hand. Wore a hat yesterday but not donning one today? No problem the adjustment is made in less time than it took to read this. Further customization of fit comes courtesy of its ability to adjust the occipital contact points independently.

The Giro Aether MIPS Helmet is available in three sizes ranging from Small to Large in the colors Matte White/Silver, Matte Black/Pearl, Matte Bright Red/Dark Red, Matte Black, Matte Black Flash, Matte Blue, Matte Citron/White, Highlight Yellow/Black, and Olive/Citron.

  • A helmet that's big on safety and small on sacrifices
  • In-Mold construction fuses the laser-cut shell to the EPS foam
  • Roc Loc 5 Plus offers quick, customized adjustments
  • 11 huge vents with deep channeling keep you cooler
  • Sunglass ports hold shades on climbs and periods on low-light
  • MIPS Spherical moves the slip-plane externally
  • Helps to redirect the energy of certain impact forces
  • Giro once again revolutionizes what we know as the cycling helmet
Tech SpecsSize
Tech Specs
Shell Material
in-mold polycarbonate
Impact Foam
Multiple Impact
MIPS Spherical
11 vents
Fit Adjustment
Roc Loc 5 Plus
Recommended Use
road cycling
Manufacturer Warranty
1 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.

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Will wait for v. 2

    Love the idea of this MIPS. The two parts of the helmet really do move. I wanted to like the helmet but it fits really low on my head, barely clearing my ears and barely leaving room for my sunglasses. I also found the retention band in the front scratched my forehead. It's likely my head as the helmet looks different in pictures. Hopefully the technology will trickle down to less costly helmets and Giro will address some of the fit issues in v. 2.

    protect your noggin!

      Fit: true to size
      Great, comfortable fit and ventilation. Highly recommended for true protection for your noggin.

      Another great Giro helmet

      • Familiarity: I've put it through the wringer
      • Fit: True to size

      I have ridden Giro helmets since their inception. After crashing back in June, I replaced my Atmos II with this helmet (had to wait until August to get it!). Overall it is a great helmet. Fits well, adjusts easily and is really light and airy. I really like it but only hold back one star because of sweat management. I would like to see Giro do a better sweatband - or build in a channel/groove. But I sweat a lot, so maybe that's more my problem.

      I ordered this a few weeks ago...looking forward to getting it. Any idea on when these will ship? It’s said “shipped within 2-3 weeks” for awhile. Thanks!

      Hi Robert! I checked our inventory and those are scheduled to arrive 8/27.

      Nate (