This is a great helmet for the hot, humid summer days we experience here in SE Virginia. It has excellent ventilation, it's light and the large size fits my 59cm head quite nicely. However, after three outings I've noticed an odd quirk - a strange, whistling or humming sound. I'm not sure what to call it. A wind tunnel effect? There is something about the configuration of the lower side openings that channels the moving air in such a way as to produce a sometimes annoying whistling sound. At other times it's a low moan, like a cold wind in the winter time on the beach. I haven't been able to tune it out yet. Perhaps over time I'll be able to, but for now it's a bit of a bother.
I've used many Bell and Giro helmets over the past 34 years of cycling. The Aeon is the lightest I've worn and because it sits a bit above the top of your head air flow is excellent keeping me cool. I tested it today on a very humid day and usually my head sweats like crazy. The Aeon kept my head from sweating like it usually does with most other helmets. I didn't even have to wear a skull cap which I usually use to absorb sweat.
The Aeon is great for warmhumid climates. Wearing it during the winter might keep my head too cool. I will find out next winter.
I bought a second one in a different color. I have been using Aeon for the last couple of years and been extremely happy with all aspects of it. I have not crashed with it to report on its structure but have done so with it predecessor and it literally gave up its life for me. The pads are shaped and placed properly and direct the stream of sweat to the middle front. Ventilation is one of the critical elements of a helmet for me and Aeon does provide the required stream through the helmet without sacrificing the structure of the helmet. I have a big head and the large size is a great fit. I highly recommend it.
What's not to like? It's very light. Vented well for my tastes. And it works. I know bc I had an Aeon that protected my mellon in a serious crash. My head bounced on the road, about the temple area. Helmet cracked all the way through in 2 places...doing it's job!! Maybe a slight headache at the worst.
So, I needed a replacement and considered other options. But decided to get another Aeon, bc it's light, looks cool, and it worked for me. Hard to argue wthat. A little bulbous, but easily overlooked considering how nice it is to ride wit. Barely notice it's there, then when called into action, it works..(I may have said that already)
I was debating between this and the Lazer Z1. I went with the Lazer because it fit my head just a little better. But I have nothing bad to say about the Giro. Its super light, great airflow and has a classic look that works for me!
Exclusively road riding, it's warm here and my neck is ruined so having a super light helmet that's also very airy is great. Saving the 40 grams from my last helmet is definitely noticeable. Plus the on-sale price was unbelievable! I really like it!
I have been a big fan of Giro helmets over the years. I have three of these Aeon helmets and they are very light and well ventilated. Giro sizes are consistent and seem to always fit well. In addition, I had a recent crash that resulted in a shoulder fracture and a bump on my head. The helmet held up well and no injury to my head. Thank you Giro. Highly recommended.
Excellent helmet, light as a feather on my big head. The new(er) Roc Loc 5 retention system is much, much better than previous models. It fits very well against my shaved head, and its adjustments allow me to wear varying thickness levels of neoprene skull caps underneath when it is cold. And, you will need to wear a skull cap underneath it when it's too cold for you as the air flow through this helmet is phenomenal. I expect this will be a huge improvement over every other previous helmet I have owned come summer (or late spring) here in CA when it's hot. The airflow should help keep my head cool when.
Also, it's far more aero than any other previous Giro or Kali helmet I've owned.
Always have had a great fit for my melon with Giro, starting with the original Ventoux(which got busted in a road race). Here to talk about it. Retention system, Roc Loc 5, easily adjustable even with cold weather gloves. Great ventilation hot days and adjusts to accommodate a head band or skull cap in cold weather.
Bought to replace an atmos that was just getting old. Agree with others on the roc loc feeling less substantial, but no issues with adjustability or durability. Great fit and super light.
I have used the Giro Aeon for a few years. I thought it was time to update to a more recent helmet, so I tried the Kask Mojito and the Giro Synthe MIPS, the latter being the newest top-of-the-line from Giro. Both were at a huge discount after Thanksgiving so it was a good occasion.
- Kask Mojito fits nice, but the leather chin strap lacks flexibiliry. Also people mention that this helmet makes them sweat a lot, and I tend to sweat a lot, so this was a negative point
- Giro Synthe MIPS fits nice, and it has the latest technology.
HOWEVER both newer models weigh 60g more than the Giro Aeon (size L). My Giro Aeon is 250g, both Kask Mojito and Giro Synthe MIPS weigh 310g. This is 'only' 60g, but it is more than 20% heavier, and this makes a HUGE difference. It makes me notice the helmet much more on my head. So latest technology or not, I'm going to stay with the Giro Aeon for the time being.
I use this helmet for both road and mtb.... the last Giro I owned probably saved my life in a 25 mph road bike crash. Helmet was badly damaged but saved me from serious head injury. I place my trust in Giro helmets.