The Kask Rotational Impact Safety System (RISS) is an advanced technology incorporated into all of Kask’s visor ski helmets to enhance safety and protection against rotational impacts. This system is designed to address the rotational forces that can occur during certain types of falls or collisions, which traditional helmets may not fully mitigate.

Key Features of the Kask RISS:

Protection Against Rotational Forces:
The system reduces rotational acceleration transmitted to the head during an impact, decreasing the risk of brain injuries caused by rotational motion.

Multi-Layered Safety Design:
RISS typically integrates specialized materials and design elements within the helmet’s inner liner to absorb and dissipate rotational energy.

Seamless Integration:
The system is engineered to work within Kask helmets without compromising their sleek, low-profile aesthetics or the lightweight design that Kask is known for.

Enhanced Comfort:
The addition of RISS does not affect the overall fit or ventilation, ensuring that skiers enjoy optimal comfort alongside advanced safety.

Certification and Testing:
Helmets equipped with RISS meet or exceed safety standards, offering peace of mind for skiers tackling demanding slopes or resort activities.

Benefits for Skiers:

Added Confidence: With protection against both linear and rotational impacts, users can focus on performance and enjoyment on the slopes.
Premium Design: Like all Kask products, helmets with RISS maintain the brand’s hallmark quality, combining style, performance, and safety.
Versatility: Ideal for a wide range of skiing activities, from recreational to competitive skiing.

This innovation aligns with Kask’s commitment to pushing the boundaries of helmet technology, making their visor ski helmets a standout choice for safety-conscious skiers.

The WG11 Test

KASK is dedicated to advancing helmet safety, creating innovations that not only meet but surpass international standards. The KASK Rotational Impact WG11 Test is a proprietary protocol developed to objectively measure helmet performance against rotational impacts, setting a new benchmark in safety.

Unparalleled Safety Standards

With a foundation in rigorous scientific research and extensive testing, KASK has designed a unique layer of protection that far exceeds global norms. The WG11 Test challenges the industry by introducing more realistic and stringent safety protocols, ensuring that every KASK helmet delivers exceptional protection during impacts.

The WG11 Testing Process

Most industry tests use headforms with higher friction coefficients than the human skull, which can lead to less accurate representations of real-world accidents. KASK’s WG11 protocol addresses this by utilizing advanced testing parameters that closely mimic human physiology.

Key Features of the Test:

Oblique Impact Tests: Conducted at a 45° angle with an impact speed of 6 m/s.
BrIC Threshold: The Brain Injury Criterion (BrIC) value—a measure of potential brain injury—must remain below 0.68 to pass. KASK helmets consistently achieve values far below this threshold, with an impressive BrIC of 0.390.

Materials and Tools:

Grade 80 aluminum oxide abrasive paper.
Headforms with a nominal friction coefficient of 0.3 (EN960 series).
Wireless triaxial accelerometers for precise data collection.
Measurements: Rotational acceleration, linear acceleration, Head Injury Criterion (HIC), and BrIC.

Proven Performance

Every KASK helmet undergoes and successfully passes this rigorous testing process, showcasing values significantly below the required limits. This commitment to safety, paired with KASK’s dedication to comfort, ensures unmatched protection for all your adventures.

The ROTATIONAL IMPACT WG11 TEST PASSED trademark signifies KASK’s proprietary testing method. While it is not a standard adopted by CEN (European Committee for Standardization), it represents KASK’s initiative to set a higher standard for rotational impact safety.

Shop our selection of Kask ski helmets with visors and the WG11 Safety System