Giro Manifest Spherical MTB Mountain Cycling Helmet

Confidence in Motion. With spherical technology, best-in-class ventilation, deep coverage and luxurious comfort, the Giro Manifest is the most premium trail-riding helmet available.
Key Features:
- MIPS Spherical technology redirects impact forces for better protection
- Progressive layering dual density foam liners to address both high and low-speed impacts
- Aura reinforced arch improves structural integrity giving more strength with less weight
- Adjustable moto-style screw in visor
- 19 wind tunnel vents for superior cooling
- Fidlock magnetic buckle for easier fitting
- The Giro Manifest Spherical is available with 0% APR finance
Among the Manifest's extraordinary features is Spherical Technology, which utilizes a ball-and-socket design powered by MIPS®, the market-leading brain protection system that helps to reduce rotational forces. Spherical Technology allows the outer liner to rotate around the inner liner during a crash and also eliminates contact with a hard-plastic slip-plane. In addition to leading head protection, the Manifest offers wide-open airflow thanks to the AURA reinforcing arch, which bolsters structural integrity while allowing air to flow into the massive Wind Tunnel vents. You'll also get a comfortable, secure fit with the easy fit and positioning adjustments built in to the Roc Loc Trail Air fit system and plush, antimicrobial XT2 padding for exceptional sweat absorption.
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 – 56 |
Medium |
55 – 59 |
Large |
59 - 63 |
Extra Large (selected models) |
61 - 65 |
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Giro Manifest Spherical MTB Mountain Cycling Helmet
My head is 58cm so ordered a Medium which Giro says fits up to 59cm. Giro is right, perfect fit with no downsides. Not cheap but worth the money, superb. Thanks Tredz.
Cycle to Work is a salary sacrifice scheme, where you can save up to 42% off a new Bike and Safety equipment. This means the cost is deducted from your salary as a non-cash benefit, so you save on tax and national insurance.
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