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Cool under pressure.

Giro focused on comfort, ventilation, and value when it designed the Sonnet Women’s helmet. The low-profile design keeps the weight down and reduces the spaceman appearance that large, bulky helmets can give you. More importantly, however, Giro built the Sonnet with 25 large vents and its Roc Loc 5 fit system for all-day comfort.

For the construction of the Sonnet, Giro starts with in-mold technology. This makes it possible to give the Sonnet a low profile with plenty of ventilation. Giro opted for its Roc Loc 5 ratcheting, micro-adjustable retention system. The system allows the wearer to adjust both the helmet’s tightness and vertical position with one hand, so you can fine tune the fit in the saddle.

  • In-mold technology
  • Low-profile design
  • Excellent ventilation
  • Roc Loc 5 system
  • Reviews
  • Q & A

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.

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.