Giro
Aether Spherical MIPS Helmet

Pros: Well ventilated, cutting-edge MIPS, good looks, great straps and adjustments

Cons: Difficult to fit versus prior Giros, allows sweat down the forehead.

I used the sizing chart as recommended given the different MIPS design and it said medium. Medium felt tight at the rear sides of my head -- like a flat spot pushing against the helmet. Tried large but it was HUGE on my head. I ended up with the medium -- very snug, almost too tight, but when I ride I do not notice this. I wear large in other helmets with no issues. The fit of this one is DIFFERENT, so hopefully it fits you better than me.

The front padding is from temple to temple which is nice but it is very thin. It takes very little sweating to saturate the pad and have sweat running down your forehead even with wearing a thicker skullcap such as Headsweats. This is much more of a problem with this helmet than any of my other helmets.

Summary: nice looking helmet with great tech and features, but the fit is more difficult and the front padding is not as absorbent and allows more sweat down the forehead -- perhaps a function of the tighter fit of the helmet on my head.

This is truly an awesome helmet. I was involved a bad bike crash on 1/25/20. I hit my head on the ground at high speed. Luckily, I did not have any serious head injuries, thanks to the helmet. I have 8 other helmets including POC, KASK and LAZER but this is my go-to helmet. Looks like I will have to buy another one from WesternBikeWorks.

Not as comfortable as previous Giro helmets for me - I have an oval headshape and this one is a little more round than oval in shape. Lightweight, great airflow, loving the upgraded straps. Overall, a very nice helmet with leading edge technology when purchased at a sale price.

I love everything about this helmet. Great upgrade from other Giro helmets I've had in the past. Amazing fit and so comfortable!

Road - light, stylish and outstanding protection - this purchase was a replacement for one that gave it all for me...

The technology in this helmet is incredible. It is also extremely uncomfortable. The problem for me is it is cut about half an inch longer than other helmets. It pushes hard on the stems and bridge of my sunglasses and pushes them down on my nose. Because of the longer skirt it also digs into the back of my neck when I am looking up from riding on the drops. No adjustments cure this ... in my case. I would love to have this state of the art protection, but I am not willing to ride without my Oakleys and I cant tolerate the discomfort.

Helmet has badly designed adjustment on the back side of helmet, it digs into the back of your head

Helmet looks great, and I also have the Synthe model. The plastic piece that rises and lowers at the back pinches my skin and is quite uncomfortable. I've adjusted up and down, but still pinches. Also, the exterior plastic decal keeps peeling off at front. I previously returned one due to this, but second helmet also had the same problem. Would not recommend, and may go back to another Synthe.

Use it for both training and racing. Plenty of ventilation.

I've been riding Giro helmets since 1998. I've always been happy with them. I tend to go to the high end helmets for the ventilation as I over heat easily. I have had Pneumo, and Atmos in the past. I ordered the same size for my new Aether and it is snug before cinching.

So far this helmet has been great, very comfortable and great looking. I have not tested it in hot weather yet but from a design perspective it looks like it will be even better than my Synthe.

Unlike a previous comment, the helmet fits great and it allows me to wear my Oakleys without pushing down on my nose and it is very comfortable in a super tuck position. By the way it looks great.

I have used Giro helmets for years, the recent being an Atmos. I really like the Aether. The adjustments are very good and easy to make. It is very comfortable and light. I like the new safety features, which is why I upgraded...it had been about 8 years since I had a new helmet and my wife was suggesting I get up to speed with the new technology to protect my head.

I would highly recommend this helmet. Expensive, but when one considers the importance of head and brain safety, it was worth the spend!

This helmet is high quality and fits really well. If you havent used a MIPS helmet it's a tad larger on the sides than the older style Giro I had for years, but it looks great and is not noticeably different in size while riding. It sits lower around the brow area so it can apply slight pressure to your riding glasses, but not a big deal at all after adjusting for it. Now other riders helmets appear to sit too high on the head I have noticed. Great rubber grippy spot to put your riding glasses if out near dark. I would purchase this helmet again.

This fits like the prior Synthes, overall. It allows great air flow and I love the neon yellow color. I had a 4 year old non-mips Synthe that is beyond it's useful life, thus bought this. The straps are secure and don't collect sweat. The padding is light but supportive. The two-part design is something I don't notice at all, hope that's a good thing. The only gripe is the front plastic part of the cage leaves some indents on my forehead when I use it, even allowing sun in to give me an odd forehead sunburn during summer. Fall riding so far has been good, not needing a beanie hat so far and still very breathable.

I would purchase again, although expensive, I'm trusting the safety tech is worth it.

Is there a helmet more awesome than a Synthe? The Aether is it. Super comfortable, lite, and ventilated. I held off buying a first gen MIPS helmet so I can't compare, but the Aether is the best helmet I have owned.

Put it though the paces last week with a 36-miler and today with a 100K (cold, wet miserable ride)....perfect fit and extremely light, great ventilation coupled with solid aerodynamics. My ONLY compliant, this is the only high end helmet (yes, at this price point...it is high end) out of too many to count in the past 3-years that DID NOT come with replacement sweat pads.....Come on Giro...

I spend a fair amount of time on my bike and find this helmet to be very comfortable. So much so, I don't even think about it being on my head. It is well made and easy to adjust. I like the technology behind it and will hopefully never have to rely on it! I would not hesitate to buy another one.

The fit of this helmet in size Small is the same fit for me as my Giro Synthe (non-mips). I feel it is true to size. I bought the helmet for the added safety and also hoping that it would be cooler than my Giro Aeon or Synthe in the Texas heat. I wore my new Aether tonight in 92-95 degree heat and I could feel the cool air flowing across my head. It was almost like an air conditioner! The helmet is noticeably cooler than my Giro Aeon. I will continue to reserve my Giro Synthe as my winter helmet. The Aether is very comfortable and I certainly did not notice the few extra grams (apx 35) between it any my other Giro helmets. Adjusting the helmet is super easy and I love the new Roc Loc and the sun glasses holder. Highly recommend!!!!

My Giro Synthe helmet was ready to be replaced and I had been drooling over the Aether, so, at a big % off, it was great deal. The Aether has the MIPS technology built in to the helmet instead of being attached to the already made helmet, so the entire interior of the helmet rotates to absorb shock in case of a crash. This seems much better than the Synthe. Fit is very good. I've only had one ride in 85 heat and the ventilation was good.