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Giro Synthe MIPS Helmet

Model Year
Helmet Size
£130.10 £34.30 discount
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  • Free tracked delivery
  • Trustpilot review 9.3 out of 45.264 reviews

Pros & Cons

  • The MIPS system makes the helmet even safer.
  • Aerodynamic yet well ventilated due to the 16 vents.
  • Compact design makes the helmet look good on your head.
  • The finish isn't perfect.
  • Somewhat inflexible straps.
Read more on what our customers have to say about this product


Brand Giro
Type of Racing Helmet All-round helmet
Weight 286 grams
Extra protection Yes
All specifications


The Giro Synthe Mips is the pinnacle of Giro's helmet design. This modern helmet offers impressive cooling performance, minimal weight, a perfect fit, and sleek aerodynamic efficiency. The difference really showed during Giro's extensive wind tunnel testing. In fact, the Giro Synthe proved to be as aerodynamic as numerous time trial-specific helmets! The best properties of the Synthe: comfort and cooling. At the heart of the helmet is the RocLoc Air Firt system. This system raises the helmet fractionally above your head, creating enough space for air to flow through. This system also allows you to adjust the tension on the head band as well as the forward/aft tilt. No longer be faced with a choice between aerodynamics and cooling: the Giro Synthe can do both!

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Model Year 2017 / 2018 2017 2017 / 2018 2019
Type of Racing Helmet All-round helmet All-round helmet All-round helmet
Helmet Size S / M / L / 51 - 55 cm S / M / L / 51 - 55 cm S / M / L / 50 - 56 cm S / M / L / 52 - 57 cm
Colour Bright Red / Matte Black / White / Fluo Yellow / Matte Black / White / Silver / White / Red Matte Black / Matte Silver Nero / Bianco / Blue Matt / Nero Lime / Nero Matt / Nero Matt-Rosso Red / White / Black
Head Circumference 60 - 63 / 51 - 55 / 56 - 59 51 - 55 / 56 - 59 / 60 - 63 59 - 62 / 52 - 58 / 50 - 56 51 cm / 52 cm / 53 cm / 54 cm / 55 cm / 56 cm / 57 cm / 58 cm / 59 cm / 60 cm / 61 cm / 62 cm / 63 cm
Weight 286 grams 215 grams / 234 grams / 264 grams 228 grams
£130.10 £109.95 £139.00 £108.40
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Customer photos


9.3 / 10 Average from 102 reviews | Write a review
9.3 / 10

102 reviews


  • Light (12)
  • Comfortable (9)
  • fit (7)
  • Lightweight (5)


  • price (5)
  • cost (2)
  • A little pricey, but probably worth it (1)
  • None that I can think of (1)

Most recent reviews

9 / 10

Mark, 20 April 2019

Comfortable and stylish

I spent a lot of time researching which helmet to buy and eventually chose the Synthe based on looks, safety (MIPS) and good reviews. The helmet is very comfortable and light. You can barely tell you’re wearing it. Airflow appears good although the weather has not yet fully warmed up. I had not heard of Mantel before and bought based on their Trustpilot review. They were considerably cheaper than elsewhere and the helmet was delivered from Holland very quickly. I would definitely use them again.


  • Weight
  • Safety
  • Ventilation
  • Looks good

9 / 10

Andrew, 18 April 2019

Fantastic upgrade

After using the Giro Savant (which is also pretty good for the money) for about 8 years, but the Synthe is a total revelation in terms of lightness and comfort. You really notice it on the longer rides.


  • Weight
  • Comfort
  • Protection


  • A little pricey, but probably worth it

10 / 10

Jill, 2 April 2019

Excellent helmet at a competitive price

10 / 10

SETH, 19 March 2019

Super comfortable, light and looks super cool!


  • Light
  • Comfortable
  • Great looks


  • None that I can think of

9 / 10

Sam, 13 March 2019

Fashion and Functionality in one clean package!


  • MIPs technology
  • Stealth looks
  • Build quality


  • Price

All specifications

Detailed product description

Roc Loc Air Fit system:
The Giro Roc Loc Air system is specially developed for the Giro Airo helmets. This new system ensures the helmet floats a little bit above your head. As a result there is a good airflow over the top of your head what ensures a good ventilation. Just like the Roc Loc®5 system the helmet can be easily fine-tuned. The tension around the head and the vertical position can be adjusted with one hand. With this Giro sets the new standards for ventilation and comfort.

MIPS System:
The MIPS System exists out of a low friction interlayer between the EPS lining and padding with an elastic fixation. This allows the helmet to move (slide or rotate) during a crash. It will move around your head to catch the side and rotational forces that could occur during a crash. This in contrast to a helmet without MIPS, whereby the impact is only collected by compressing the EPS lining.

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!!

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.

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.

Additional information

• Wind Tunnel Aided Design for aerodynamic efficiency on the road
• Integrated Aero Mesh Panels (ideal storage place for your glasses)
• Super Lights X-Static pads
• New composition of EPS foam, lighter and stronger than before
• 19 vents; designed and shaped with wind tunnel technology
• Roc Loc Air system
• Sizes: S (51-55 cm), M (55-59 cm), L (59-63 cm)