Eclipse Spherical Helmet

The aerodynamic Eclipse Spherical is our most sophisticated, stylish, and lightweight aero road helmet, and it's crafted with Spherical Technology powered by Mips®, so you can ride with more comfort and an additional layer of protection.

Eclipse Spherical Helmet

Name: Eclipse Spherical Helmet
Brand: Giro
SKU: 100000000300000136
Price: 250.00 USD
Availability: InStock
Rating: 5.0 (2 reviews)

5.0 (2)

Color Matte Black/Gloss Black

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size

Size Guide

HOW TO MEASURE
SIZE GUIDE

HOW TO MEASURE YOUR SIZE

Wrap a measuring tape around your head, keeping the tape level from front to back. Note the measurement and reference the Size Guide.

ADULT SUPER FIT SIZE	CIRCUMFERENCE
S	51 - 55 cm
M	55 - 59 cm
L	59 - 63 cm

Note: We recommend you try helmets on before buying. Make sure the helmet fits with a little room when the fit system is loose, and sits low enough to protect your forehead without hindering your vision. Once you’ve got the right size, you can adjust the fit.

HOW TO ADJUST THE FIT

Step 1: If the helmet has one, adjust the fit system at the rear of the helmet for a snug, secure fit. Some fit systems also include a vertical tuning feature that allows you to adjust the fore/aft tilt, for optimal positioning on your head.

Step 2: Adjust the straps so that they sit just below the earlobes.

Step 3: Adjust the buckle so that it rests against the back of the jaw/throat.

Step 4: Adjust the interior pads if needed.

Step 5: Check the fit to make sure helmet is comfortable and secure. It should not roll forward or back, or be able to slide off.

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Details

Speed without compromise

The Eclipse Spherical is both the fastest road helmet and the coolest aero road helmet Giro has ever created, bringing our best technologies together in a light, compact form that's ideal for road and gravel racing. The sleek outer shell actively streamlines airflow to reduce drag across multiple wind angles, while 14 Wind Tunnel vents pull air through the helmet to provide incredible cooling power that rivals our most aggressively vented road helmets. Inside, the ball-and-socket design of Spherical Technology is powered by the Mips® brain protection system, which allows the helmet's outer EPS foam liner to rotate around the inner foam liner during a crash to help redirect impact forces away from the brain. Progressive Layering of both the inner and outer liners help to offer more comprehensive protection, too. The patented Roc Loc® 5 Air system enhances stability and fit, and plush antimicrobial Ionic+ padding helps absorb sweat and moisture while providing durable antimicrobial performance.

SKU #

Specs

Reflectivity	Reflective decals
Construction	In-Mold polycarbonate shell with EPS liner Full lower Hardbody™ coverage
Ventilation	14 Wind Tunnel vents with deep internal channeling
Fit System	Roc Loc® 5 Air
Product Weight	270 (size Medium CPSC, CE)
Certification	Complies with the US CPSC Safety Standard for Bicycle Helmet for Persons Age 5 and Older
Highlights	Nanobead™ EPS foam Full lower hardbody coverage Ionic+™ anti-microbial padding

We’ve Done The Math

Aerodynamics

Incremental Gains, Exponential Rewards

Not only is Eclipse Spherical a big step up from the speed of our previously fastest aero road helmet, the Vanquish, it is the fastest road helmet we have ever tested. Eclipse beats the closest aero road helmet competitor by 14 seconds over 100 miles at 25mph, and is a full minute faster than our own Vanquish. (Wind Averaged Drag, combination of 80% typical riding position and 20% head down riding position.)

Cooling Power

Helmet Comparison By Cooling Efficiency (%)

Aether 89.75%
Eclipse 89.25%
Competitor 88.64%
Helios 87.68%
Vanquish 85.13%

Confidently Cool

We tested with our proprietary Therminator head form to measure helmet cooling efficiency and the results prove that Eclipse is almost as cool as our best-in-class road helmet, Aether Spherical, setting a new standard for aero road helmets. (Cooling measured from 100º starting temperature at with 25 mph wind speed).

Features

Transform Air

Transform Air Technology actively streamlines airflow to reduce drag across multiple wind angles. It optimizes aerodynamics by making the helmet appear longer to the wind, while still retaining an aero advantage in a head-down sprinting position.

14 WIND TUNNEL VENTS

Giro helmets are engineered with our proprietary Wind Tunnel venting system. This elaborate design combines active vents in the helmet’s shell with exhaust channels inside the helmet that thrust cool, fresh air over and around the rider’s head while forcing heat and stale air out.

Spherical Technology

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.

PROGRESSIVE LAYERING™

Giro helmets designed with Progressive Layering™ use dual-density EPS foam liners to address high- and low-speed impacts for more comprehensive energy management.

DEEP INTERNAL CHANNELING

The inner liner of the helmet is aggressively engineered to assist air flowing through the helmet, working in conjunction with our Wind Tunnel vents to provide an easy pathway for cool air to flow in and hot air to exhaust out.

ROC LOC® 5.5 AIR FIT SYSTEM

Using a patented design that suspends the helmet just slightly off the top of the skull, Roc Loc® 5.5 Air 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 adjustments mimic the Roc Loc® 5, allowing you to easily custom fine-tune fit tension and fore-aft tilt in seconds using just one hand. Reflective decals provide added visibility.