Giro Insurgent Spherical Full Face MTB Cycling Helmet







- Spherical Technology, Powered By Mips — Spherical Technology's ball-and-socket design, powered by Mips®, helps redirect impact forces away from the brain by allowing the outer liner to rotate around the inner liner during a crash. It also eliminates contact with hard plastic or slip-planes against the skin.
- Optimized Front Intake Vents — Giro engineers designed precise placement and shape of intake vents to optimize cool air flowing over riders' heads.
- Maximized Rear Exhaust Vents — Our complex Wind Tunnel venting system allows hot air an easy escape route from the rear of the helmet.
- Breakaway Visor Bolts — Tool-free breakaway visor bolts are engineered with an integrated Allen key receiver for easy removal and replacement in case of crash.
- Directional Snap System — In case of emergency, cheek pads are easily removable without disturbing the rider's head and neck position.
- Patent-Pending Flex Gasket — The zone along the lower edge of the helmet is designed to allow some flex, reducing the role a helmet can play in certain collarbone impacts.
- Stealth Camera Mount — The central visor bolt hole does double duty as an ideal location for mounting P.O.V. action cameras.
- Roc Loc Air DH fit System — This revolutionary fit system adds a new dimension to helmet performance by enhancing cooling, as well as fit comfort and stability. Using a patented design that suspends the helmet just slightly off the top of the skull, Roc Loc Air DH allows cool airflow to pass directly over your head, further enhancing the performance of vents and internal channeling that exhaust heat out of the helmet. Fit and feel adjustments mimic the Roc Loc 5, allowing you to easily custom tune fit tension and fore-aft tilt of the helmet in seconds using a single hand.
- IONIC+ Padding — Pure Silver is the secret ingredient that gives IONIC+® the power to provide natural, permanent odor protection to keep your helmet feeling fresh.
Occasionally, without notice, manufacturers change product design and/or specifications.
Giro Helmet Size Guide
How to measure your head size
To find the circumference of your head, place a tape measure in the centre of your forehead, wrap it around above your ears and around the back of your head. If there's a slight difference between two different sizes, always go for the tighter size.

Giro cycling helmets are adjustable so will fit a range of head sizes. Once you know the circumference of your head, select an appropriate helmet size. For example, if your measurement is 57cm then a size M (55-59cm) or a One Size (54-61cm) will fit you.
Giro Men’s or Unisex Helmet Size Chart
|
Helmet Size |
Head Circumference cm |
|
One Size |
54 – 61 |
|
Small |
51 – 55 |
|
Medium |
55 – 59 |
|
Large |
59 - 63 |
|
Extra Large (selected models) |
61 - 65 |
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