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  • Giro Sutton Helmet
  • Giro Sutton Helmet
  • Giro Sutton Helmet Detail
  • Giro Sutton Helmet Side
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GiroSutton Helmet
Sale 35% Off$51.97 - $63.96

Item # GIR00EK

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  • Matte Black, S ($63.96)
  • Matte Grey, M ($51.97)
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Item # GIR00EK

Commute in Style.

The Giro Sutton Helmet is a no-nonsense helmet aimed for the commuter. The form and function is refreshingly simple and it does exactly with it's supposed to do: protect your head. The Sutton does pack some features that benefit the commuter and the large variety of colors ensure it'll look good with whatever you wear on your commute without looking like a racerboy or girl. On the rear, its two reinforced vents provide a spot to pass a U-lock through and lock it to your bike.  The straps feature reflective elements that extend to the brim of the removable soft rain and sun visor. A clip on the rear makes attaching a bike light easy and places it at a level that is more noticeable to drivers. Of course Giro is a performance company at heart and the Sutton has the culmination of 30 plus years of DNA running through its veins so safety and fit are always paramount. You'll never want to use a helmet for it's intended purpose, but if you do, Giro will keep you as safe as they know how. Otherwise, you'll have a helmet that looks great and has nice well-thought out features.
  • A commuter helmet with excellent features
  • In-Mold construction for durability
  • Roc Loc City fit system keeps helmet stable
  • Soft rain and sun visor adds style and versatility
Tech SpecsSize
Tech Specs
Shell Material
Impact Foam
8 vents
Fit Adjustment
Roc Loc City
soft, removable
Recommended Use
Manufacturer Warranty
1 year


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)
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.

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Great Helmet, Great Customer Service

  • Familiarity: I've used it several times
  • Fit: Runs small

I love this helmet! I was a little worried about this style of helmet not getting enough air flow since it's more closed than my previous helmet, but I've used it on some hot Chicago days and have been impressed with the amount of airflow and comfort. (I should say though that I have very short hair.) I love the flat black, the straps feel good after only a little adjusting, and one of the selling points for me was the easily adjustable "Roc Loc City fit system" since I often do different things with my hair or wear a stocking cap in the winter, etc. that affect how a helmet fits. This helmet fits so well, I regret not buying one years ago! Since there is not much reflective material on this helmet, I was prepared to embellish it with some black reflective tape which I believe will help keep me safe on night rides.

As for customer service, I originally ordered a small helmet. My head size is 21 3/8" and it fit just barely, but I knew I would want more give with the size especially in winter. I dreaded having to go through the exchange process, but when I called, a nice dude named Don made the whole thing super easy. I had the next helmet within a few days. The medium fits perfectly*, looks great with the black reflector tape, feels amazing, and stays put while I ride (something my previous one didn't do). While I haven't used the clip on the back for a light yet, I plan to, and appreciate that feature. I recommend this helmet, and ordering from Competitive Cyclist!

*I'm marking this helmet as "Runs Small" since the Medium fits me and will actually go tighter than my size (21 3/8") and the Small was quite snug at its most open size.

Great Helmet, Great Customer Service