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Giro Register Helmet


Item # GIR00G1

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Item # GIR00G1


You'll barely feel it's there.

Barely noticeable wrapped around your noggin, the Giro Register Helmet offers rugged construction without the gargantuan presence and pressure-ridden discomfort you've come to expect from commuter lids and casual cycling helmets. As one of the most affordable helmets in Giro's line, the Register comes with a surprising list of favorable attributes for the everyday cyclist seeking something unobtrusive on the ride into work, yet dependable in the case of a crash.

Proving its worth on the road, In-Mold construction pairs a polycarbonate shell with an EPS foam liner that dissipates impacts, should you take a tumble off your bike. Besides being rugged, this construction keeps it impressively lightweight and well-ventilated atop your dome, which is always a good thing. The helmet is finished with Giro's Roc Loc Sport for a secure, head-wrapping fit, alongside a Quick Link visor that keeps blinding sunshine from obscuring your vision.

  • Lightweight lid for commuters and casual cyclists
  • In-Mold construction is impressively light and rugged
  • Roc Loc Sport provides a head-wrapping fit with turn of dial
  • Quick Link visor blocks blinding sunshine and oncoming elements
  • 22 sculpted vents rapidly disperse heat for cool-wearing feel
  • Reflective rear accents for extra visibility in low light

Tech Specs

Shell Material:
Impact Foam:
EPS impact foam
22 sculpted vents
Fit Adjustment:
Roc Loc Sport (rear adjustment dial)
yes, removable Quick Link visor
Recommended Use:
commuting, cross-country, road cycling
Manufacturer Warranty:
1 year

Size Chart


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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