What are the main features of Safety Helmet | Type 1, Vented with Koroyd®?

Type 1, No Metal Components, Dielectric (model GH401), Koroyd Impact Absorbing Technology, 4 Points Adjustable Chin Strap, Adjustable Ratchet System, ANSI Z89.1-2014, Reduces Heat Stress, Advanced Breathability and Cooling System, Lower profile & Less weight, Class C, Class E, Class G

What are the technical specifications for Safety Helmet | Type 1, Vented with Koroyd®?

Helmet Style: Type I; Shell Material: ABS; Impact Absorbing Material: Koroyd Technology; Energy Absorbtion Rate: Constant; Heat Strees Reduction: By 6.07 °C / 10.92 °F; Helmet Weight: 0.93 Pounds; Height Profile: 143.1 mm; Has EPS Foam: No

black | Vented Safety Helmet GH400BK | ANSI Type 1, Class C

blue | Vented Safety Helmet GH400B | ANSI Type 1, Class C

gray | Vented Safety Helmet GH400G | ANSI Type 1, Class C

green | Vented Safety Helmet GH400GN | ANSI Type 1, Class C

orange | Vented Safety Helmet GH400O | ANSI Type 1, Class C

red | Vented Safety Helmet GH400R | ANSI Type 1, Class C

white | Vented Safety Helmet GH400W | ANSI Type 1, Class C

yellow | Vented Safety Helmet GH400Y | ANSI Type 1, Class C

all-show | Vented Safety Helmet GH400 | ANSI Type 1, Class C

GE PPE SKU: GH400BK

Safety Helmet | Type 1, Vented with Koroyd®

Q: What is this safety helmet made of and how much does it weigh?

The helmet features a durable ABS shell and an inner layer of Koroyd® for impact absorption. It's designed to be lightweight for all-day comfort, weighing only 0.93 pounds.

Q: What work environments is this helmet best suited for?

This vented helmet is ideal for construction, general industry, and any job where head protection from top impact is needed, especially in warm conditions. Its Class C rating means it is not suitable for work with electrical hazards.

Q: Can I attach accessories like face shields or earmuffs?

This helmet is designed primarily for impact protection. Please refer to the user manual for information regarding compatible accessories to ensure a proper and safe fit.

Q: How should I care for my safety helmet?

Clean your helmet using only mild soap and warm water. You should inspect the shell, suspension system, and chin strap daily for any signs of wear, damage, or degradation. Store it away from direct sunlight and extreme temperatures.

Q: What safety standards does this helmet meet?

This helmet meets the requirements of ANSI Z89.1-2014 for a Type 1, Class C safety helmet, providing protection against impacts to the top of the head.

Q: What makes Koroyd® technology different from traditional foam helmets?

Koroyd® absorbs impact energy more effectively by crumpling at a constant rate, which can reduce the force transferred to your head. Its structure is also 95% air, making the helmet lighter and significantly more breathable than those with solid foam liners.

$109.95 USD

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Essentials Features

Top benefits and standout attributes for this product.

Type 1
No Metal Components
Dielectric (model GH401)
Koroyd Impact Absorbing Technology
4 Points Adjustable Chin Strap
Adjustable Ratchet System
ANSI Z89.1-2014
Reduces Heat Stress
Advanced Breathability and Cooling System
Lower profile & Less weight
Class C
Class E
Class G

Overview Product Description

ANSI Z89.1-2014 Koroyd® Technology Type 1 Class C

Stay protected and comfortable with the GH400 Vented Safety Helmet. This award-winning helmet replaces traditional EPS foam with Koroyd’s advanced impact-absorbing technology, an engineered structure of thin-walled tubes that crumple consistently on impact to better protect your head.

Constructed with a durable ABS shell, this helmet is designed for performance. Its innovative Koroyd liner is 95% air, resulting in an exceptionally lightweight 0.93 lb design that improves ventilation and reduces heat stress. A secure fit is guaranteed with the 4-point adjustable chin strap and an easy-to-use adjustable ratchet system.

✔ Advanced Impact Absorption with Koroyd® Technology
✔ Enhanced Breathability and Cooling System to Reduce Heat Stress
✔ Lightweight, Low-Profile Design for All-Day Comfort
✔ Secure Fit with 4-Point Adjustable Chin Strap
✔ Easy-to-Use Adjustable Ratchet Suspension System
✔ Complies with ANSI Z89.1-2014, Type 1, Class C Standards

Tip: For optimal safety, inspect your helmet before each use. Replace it immediately if it shows any signs of cracks, dents, or has sustained a significant impact.

This Type 1 Vented Safety Helmet provides advanced protection and comfort for demanding work environments.

Important: This is a Class C (Conductive) helmet and does not offer protection from electrical hazards. It should not be used in applications where electrical contact is possible.

Tech sheet Specifications

Check the key technical data to validate compatibility and performance.

Helmet Style

Type I
Shell Material

ABS
Impact Absorbing Material

Koroyd Technology
Energy Absorbtion Rate

Constant
Heat Strees Reduction

By 6.07 °C / 10.92 °F
Helmet Weight

0.93 Pounds
Height Profile

143.1 mm
Has EPS Foam

No

Resources Documentation & downloads

Manuals, sheets, and helpful files ready to download.

Overview About the product

The Future of the 
Safety Helmet has Arrived.

Our award winning safety helmet, the GH400, features Koroyd’s advanced impact absorbing technology as the inside protective layer between the ABS shell of the helmet and the head of the user. In comparison with the rest of the safety helmets on the market today, the GH400 is the only one that uses Koroyd's patented technology, as the solely protective material, instead of the traditional EPS foam most of the rest of the helmets use.

Additional details Why have we chosen Koroyd over traditional EPS foam?

Because when EPS foam is compressed during an impact, it becomes stiffer, resulting in more energy being transferred from the impact to the head of the user. The Koroyd material used in the GH400, as shown in the video, crumples consistently during the impact. This advantage reduces the energy from an impact transferred to the user, and consequently protects the user better.

Our mission is to deliver a helmet that offers better protection without compromising user comfort. A helmet so lightweight and compact it's easy to forget it's on, reducing short-term removal and the risk of injury, while improving performance.

The engineered structure of the Koroyd material has many benefits. The most important one is the ability to absorb the energy of any impact at a constant rate, decreasing the chances of injury for the user. Koroyd outperforms EPS foam by 48%, featuring advanced impact technology.

Another vital benefit is minimal heat accumulation. The structure of the Koroyd material is composed by the world’s thinnest walled tubes. This enables heat from the user’s head to vent out of the helmet easily. Helped by the cross ventilation system, the GH400 prevents heat stress in most conditions.

Featuring the world’s thinnest walled tubes, Koroyd`s structure is 95% air, providing reduced weight and enhanced comfort without compromising on safety.

FAQ What is this safety helmet made of and how much does it weigh?

FAQ What work environments is this helmet best suited for?

FAQ Can I attach accessories like face shields or earmuffs?

FAQ How should I care for my safety helmet?

FAQ What safety standards does this helmet meet?

FAQ What makes Koroyd® technology different from traditional foam helmets?

FAQ What colors and pack sizes are available?

This helmet is available in Black, Blue, Green, Orange, Gray, Red, White, and Yellow. You can also purchase them in convenient packs of 1, 3, 5, or 10. See the table below for specific SKUs.

Variant	SKU
Black / 1 Pack	GH400BK
Black / 3 Pack	GH400BK-3PACK
Black / 5 Pack	GH400BK-5PACK
Black / 10 Pack	GH400BK-10PACK
Blue / 1 Pack	GH400B
Blue / 3 Pack	GH400B-3PACK
Blue / 5 Pack	GH400B-5PACK
Blue / 10 Pack	GH400B-10PACK
Green / 1 Pack	GH400GN
Green / 3 Pack	GH400GN-3PACK
Green / 5 Pack	GH400GN-5PACK
Green / 10 Pack	GH400GN-10PACK
Orange / 1 Pack	GH400O
Orange / 3 Pack	GH400O-3PACK
Orange / 5 Pack	GH400O-5PACK
Orange / 10 Pack	GH400O-10PACK
Gray / 1 Pack	GH400G
Gray / 3 Pack	GH400G-3PACK
Gray / 5 Pack	GH400G-5PACK
Gray / 10 Pack	GH400G-10PACK
Red / 1 Pack	GH400R
Red / 3 Pack	GH400R-3PACK
Red / 5 Pack	GH400R-5PACK
Red / 10 Pack	GH400R-10PACK
White / 1 Pack	GH400W
White / 3 Pack	GH400W-3PACK
White / 5 Pack	GH400W-5PACK
White / 10 Pack	GH400W-10PACK
Yellow / 1 Pack	GH400Y
Yellow / 3 Pack	GH400Y-3PACK
Yellow / 5 Pack	GH400Y-5PACK
Yellow / 10 Pack	GH400Y-10PACK

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Safety Helmet | Type 1, Vented with Koroyd®

Complete Your Protection

Protective Eye Shield Kit - Clear

Protective Eye Shield Kit - Smoke

Anti-Fog Full Face Visor Kit

Full Face Mesh Visor Kit

Full Face Visor Carrier

High-Visibility Reflective Stickers

The Future of the 
Safety Helmet has Arrived.

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Safety Helmet | Type 1, Vented with Koroyd®

Complete Your Protection

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Protective Eye Shield Kit - Smoke

Anti-Fog Full Face Visor Kit

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We Are Always Happy to Assist You

Call Us

Email Address

Address

Assistance Hours

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Get your welcome code