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Giro Women's Sonnet Cycling Helmet

Product Rating   Product Rating  1 customer review|100% say true to size
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SKU: 20390
Product Code: 46420

Availability: Usually Ships in 24 Hours
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A favorite in the women’s collection, the Sonnet cycling helmet offers riders with a comfortable performance fit. The slim shape and the 25 Wind Tunnel™ vents provide optimal ventilation as the Roc Loc® 5 fit system delivers a comfortable, adjustable fit. This lightweight helmet is crafted with an IN-mold construction to ensure long-lasting durability that won’t weight you down.

Features & Benefits

  • Ideal for road use.
  • Women-specific fit.
  • Roc Loc® 5.
  • In-mold polycarbonate shell with EPS liner.
  • 25 Wind Tunnel™ vents with internal channeling.
  • 1 year warranty.


  • 4 star rating (Based on 1 Review)
    100% of Fit Survey Respondents said this item "Feels true to size"

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  • rating star
    By from
    on 3/24/2013
    Feels true to size

    This helmet fits great.  It doesn't feel like its on top of my head, more like my head is IN the helmet.  I just wish it looked less "round".


Based in Scotts Valley, CA, Giro is a worldwide leader in the design, development and marketing of premium, high-performance protective gear and accessories for action sports and active lifestyles. An innovative, consumer-focused brand, Giro is on a mission to create products on the leading edge of inspired design that help you to look good and feel your best.