Shop our holiday gift guide and find the perfect gift »
  • Free 2-Day Shipping on Orders Over $50
  • 100% Guaranteed Returns

Giro Atmos Cycling Helmet - Women's

Out of Stock

Item # GIR0100

Don't worry though, we have a lot more Road Helmets in stock than that.

View similar in-stock products

Item # GIR0100


The Giro Atmos is lighter than smoke, and safe as houses.

The Giro Atmos Helmet is the choice of elite women riders around the world. Yep, even in France. With 26 vents scooping fresh air through the internal channels and out the rear, the Atmos actually keeps you cooler than riding without a helmet, while Giro's famous Roc-Loc 4 fit system grips your head like an octopus on steroids. Carbon-fiber roll cage construction tips the scales at a measly nine ounces, so you'll barely know it's there until it saves your gray matter.

Size chart


Adult Cycling Helmets
 SMLXLAdult UniversalWomen's Universal
Head Circumference 20 - 21.75in
(51 - 55cm)
21.75 - 23.25in
(55 - 59cm)
23.25 - 24.75in
(59 - 63cm)
24 - 25.55in
(61 - 65cm)
21.25 - 24in
(54 - 61cm)
19.75 - 22.5in
(50 - 57cm)
How to Measure:
For best results, use a tape measure to measure around your head where your hat would fit comfortably.

Reviews & Community

What do you think of the

Giro Atmos Cycling Helmet - Women's

? Share a...

Write a review

No file chosen

Rather attach a photo from another website?

Rather attach a photo from your computer?

  • Product review:
  • Share a video
  • Share a photo

How familiar are you with the product?(Optional)

Only jpg, jpeg, png, gif or bmp files please.


Here's what others have to say...

what is the difference in a mens bike...

what is the difference in a mens bike helmet and a women,s the only thing I can see is the colour maybe?????

Responded on

Yeah, usually the only real difference in this case is in the colors and graphics. The sizing might be slightly different (esp in the Small size) but double check the sizing chart for that info. Also a women's helmet could have smaller buckles, to accommodate smaller hands, but its all truly aesthetic differences.

Responded on

Size, women typically wear a Small or Medium. Men are typically Medium or Large. Graphics also come into play, but some are very neutral.

Write your question here...Are there any...

Write your question here...Are there any bike helmets that don't have the stupid face grip buckel thing so you don't get a face tan line?

Responded on

the chin strap? the chin strap is mandatory for helmets

5 5

Very Cool helmet!

The atmos looks great and keeps your head incredibly cool throughout the ride! At first it really dug into my forehead during rides and I found myself loosening it after 1-2 hours. However, I took some pieces of replacement/spare lining from another helmet and affixed it just across the inside front edge and haven't had pain/problems since. Would definitely buy again.

5 5

Cooler than I had even hoped!

Love my new helmet! I wanted a helmet that was well ventilated and that is why I purchased this helmet. When the ad said that it kept you cooler than nothing at all, I did not believe it; however, when riding on a hot day, my entire body was sweating but when I took off my helmet, my hair was dry! I couldn't believe it! Definitely worth the price.

4 5

light, cool, nice venting

i think the little plastic thing is hard to adjust one handed on the back of the helmet but everything else is awesome. It even comes with a removable inner liner which is super nice when it's a little bit cooler.

Responded on

i like the pink, reminds me of the giro

can someone tell me about the product...

can someone tell me about the product quality

Responded on

looks like made in the alien's workshop.Giro's quality is quite nice. They are one of the leading helmet suppliers in the USA. If you buy any gear from & are not totally satisfied, they'll let you return it, no questions. I love my Giro helmet, and I have a feeling you will love this one. Plus, the women's specific colors are fun ;-) - Find your bliss here.