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Giro Atmos II Helmet

Helmet Size
89.95€ 60.00€ discount
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  • Free tracked delivery to Ireland
  • Trustpilot review 9.3 out of 45.406 reviews

Pros & Cons

  • Excellent ventilation due to the 26 vents.
  • Fit can be easily adjusted due to the RocLoc 5 system.
  • Finish.
  • Somewhat inflexible straps.
Read more on what our customers have to say about this product


Brand Giro
Model Year 2017
Type of Racing Helmet All-round helmet
Weight 254 grams
Extra protection No
All specifications


The new Giro Atmos II bike helmet. This Giro Atmos II is the successor of the Giro Atmos. The ''old " Atmos bike helmet was for many years the favorite helmet of many cyclists. Giro managed to do the impossible with the Atmos II, namely improve the old Atmos! This redesigned helmet kept its stylish design and fit, but has improved cooling properties. The 26 ventilation holes are positioned to optimize the airflow. The air channels are like a wind tunnel and provide constant cooling of your head. The Atmos II has a so-called In Mold-construction. This means the EPS inside and the Polycarbonate outer shell are merged instead of glued together. In addition to this outer shell this helmet is fitted with a thermoformed Roll Cage. Which not only provides more strength, but makes the helmet shape stable, without adding extra weight. This all ensures the Atmos II will be found many years on several heads!

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Model Year 2017 2017 / 2018 2017 / 2018 / 2019 2017
Type of Racing Helmet All-round helmet All-round helmet All-round helmet Basic helmet
Helmet Size S / M / L / 51 - 55 cm S / M / L / 50 - 56 cm S / M / L / 51 - 55 cm S / M / L
Colour Black / Red / Matte White / Black / Blue / Matte Black / Highlite Yellow Garminum Blue / Bohrium Red / Septane Green Highlight Yellow / Matte White / Matte Black / Bright Red / Matte Black / Matte Red / Matte Olive / Citron Yellow / Red / Black
Weight 254 grams 198 grams 300 grams
Extra protection No No Yes Yes
89.95€ 99.95€ 99.95€ 99.95€
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Customer photos


8.8 / 10 Average from 163 reviews | Write a review
8.8 / 10

163 reviews


  • Lightweight (3)
  • ventilation (2)
  • price (2)
  • Looks (1)


  • Probably not aero (1)
  • None. (1)
  • Straps too a little time to get right. (1)
  • Not cheap option (1)

Most recent reviews

10 / 10

Paul, 13 March 2019


Love these helmets, safe, light weight and well ventilated.

8 / 10

Conor, 1 November 2018

Comfortable and well vented

Light but not the lightest, looks good on though and very well vented


  • Ventilation
  • Weight
  • Looks
  • Comfort


  • Probably not aero

10 / 10

Thomas, 9 October 2018

Brilliant savings!

Really happy with my Giro, especially at 50% off! Super lightweight and low profile.


  • Lightweight
  • Low profile
  • Good ventilation


  • None.

10 / 10

Michael, 12 September 2018

Very comfortable

This helmet is very light and comfortable.

10 / 10

Paul, 27 August 2018

Excellent helmet at a fantastic price!!

Lovely fitting helmet, lightweight and very comfortable!! Gives the helmets alot higher price point a run for their money!!!


  • Style
  • Fit
  • Price
  • Lightweight

All specifications

Detailed product description


Roll Cage:
Roll Cage reinforcement is a strong web made out of a DuPont Nylon that its poured into the EPS foam liner. It provides an extra dimension of strength and integrity, which is noticed when you need it the most.

Super Fit:
A good helmet is comfortable, you will notice that from the first moment you put it on. Thanks to the Super Fit system it is so comfortable it seems to disappear on your head. The Giro Three-Size Super Fit system is based on more than 20 years of experience and the average human head size. Their experience is gained by producing helmets for the best riders of the world. Resulting in ‘’Skull Hugging Luxury’’. Its design ensures 98% of the world population will fit this helmet, and that while it looks and feels like a custom made helmet.

X-static Padding:
Besides the fact they are comfortable The X-static pads ensure anti-microbial properties to keep your helmet longer clean . The pads are machine washable.

In-Mold Construction:
The In-Mold Construction combines a strong polycarbonate outer shell with
shock absorbing helmet padding. Thanks to its fusion process it is possible to sculpt a better ventilation system, so the In-Mold helmets are lighter and cooler than most traditional helmets.

Wind Tunnel Ventilation:
Giro helmets are developed using its Giro Wind Tunnel ventilation system. This system combines the active vents with the internal ventilation outlets. This combination ensures a cool, fresh air flow over and around the riders head, while forcing the heat and stale out. The renewing of these ''air channels'' turns out to be a huge success. The riders were real enthusiastic, they noticed the new ''air flow'' around their head, resulting in a better cooling!!

Roc Loc 5:
After more than two-years of development, Giro introduces: Roc Loc 5. This groundbreaking fit system provides an entirely unique user experience. It has an unmatched level of comfort, stability, adjustability and savinged weight. With Roc Loc 5, you can adjust the fit tension and vertical position with one hand. The weight of the Roc Loc 5 system has been reduced by almost 40% compared to its predecessor!

Additional information

• Roc Loc 5 adjustment system
• In-Mold construction combines polycarbonate outer shell with shock-absorbing foam liner
• Equipped with 26 vents
• Wind Tunnel ventilation combines vents with internal exhaust channels
• Thermoformed SL Roll Cage reinforcement
• Suitable for: Road Race, Triathlon, MTB XC Race, Cyclocross and Daily Use
• Weight: 260 grams (size M Weighed by Mantel.com)
• Sizes: S (51-55 cm), M (55-59 cm), L (59-63 cm)

Customer Service
+44 20 3695 9922