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Giro Sonnet Helmet - Women's

Sale $54.99 - $99.95

Item # GIR0409 Past Season Colors

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  • Black Galaxy, S ($54.99)
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  • White Pearl Crackle, S ($62.96)
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  • Matte Black/Bright Pink, M ($99.95)
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  • Matte White/Turquoise/Vermillion, M ($99.95)
  • Matte Titanium Rio, S ($99.95)
  • Matte Titanium Rio, M ($99.95)
  • Purple Blue, S ($99.95)
  • Purple Blue, M ($99.95)
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Item # GIR0409

Description

Designed for the rider who appreciates comfort and protection, the Giro Women's Sonnet Helmet has a low-profile design that still packs in excellent ventilation. The Sonnet's In-Mold technology bonds a tough outer polycarbonate shell to an impact-absorbing expanded polystyrene liner.

The result is a light and structurally sound helmet, and, to make sure the Sonnet fits correctly, Giro's Roc Loc 5 system lets you dial in both tension and vertical positioning with a single hand. To accomplish this, the Roc Loc 5 uses a ratcheting, micro-adjusting dial to open or close the retention system. For up and down adjustment, a three-position bracket provides 15 millimeters of movement without removing the helmet.

The Giro Sonnet Women's Helmet comes in sizes Small and Medium and in the colors Matte Black/dynasty green modernist, and White/rhodamine.

  • In-mold technology
  • Low-profile design
  • Excellent ventilation
  • Roc Loc 5 system

Tech Specs

Shell Material:
polycarbonate
Impact Foam:
EPS foam
Ventilation:
25 vents
Fit Adjustment:
Roc Loc 5
Recommended Use:
road
Manufacturer Warranty:
1 year

Size chart

Giro

Adult Cycling Helmets
 SS/MMM/LLXLAdult UniversalWomen's Universal
Head Circumference 20 - 21.75in
(51 - 55cm)
20 - 22.5in
(51 - 57cm)
21.75 - 23.25in
(55 - 59cm)
21.75 - 24in
(55 - 61cm)
23.25 - 24.75in
(59 - 63cm)
24 - 25.55in
(61 - 65cm)
21.25 - 24in
(54 - 61cm)
19.75 - 22.5in
(50 - 57cm)
Cipher
 XSSML
Head Circumference 20 - 20.75in
(51 - 53cm)
21.25 - 22in
(54 - 56cm)
22.5 - 23.25in
(57 - 59cm)
23.5 - 24.25in
(60 - 62cm)
How to Measure:
For best results, use a tape measure to measure around your head where your hat would fit comfortably.

Reviews & Community

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Very comforatable

  • Familiarity: I gave it as a gift but have feedback to share

I bought this for my wife. She doesn't like to wear a helmet but this one is so comfortable that she likes wearing it. Looks nice it fits really well.

Avg. ride time: 8h 33m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

solid helmet

  • Familiarity: I've used it once or twice and have initial impressions

good fit, light, aero and good all around helmet

why are you reviewing a women's helmet?

Summer ride

It was selfie Sunday.. couldn't resist showing off my new gear!

Summer ride

Is it Vented? Do you get hot wearing a black helmet?

It does vent well and didn't get too hot, but I must admit I haven't ridden in temps higher than about 75 degrees.