Technological Innovation

What is BS EN 4569-4:2017?

BS EN 4569-4:2017 is a technical standard set by the British Standards Institution (BSI) that provides guidelines for the classification, selection, and performance requirements of body armor. This standard specifically focuses on body armor designed to protect against bullets and other projectiles.

The Importance of BS EN 4569-4:2017

In today's world, where threats to personal safety are prevalent, the need for effective body armor cannot be underestimated. BS EN 4569-4:2017 helps ensure that body armor meets certain quality and performance criteria, providing reliable protection to those who depend on it, such as military personnel, law enforcement officers, and security professionals.

This standard plays a crucial role in improving the overall safety of these individuals by setting clear guidelines for manufacturers to follow when producing body armor. By adhering to BS EN 4569-4:2017, manufacturers can enhance the reliability, durability, and effectiveness of their products, giving end-users peace of mind.

Key Requirements of BS EN 4569-4:2017

BS EN 4569-4:2017 outlines various key requirements that body armor must meet to comply with the standard:

Ballistic Resistance: The body armor must be capable of resisting penetration from specified caliber projectiles, such as bullets, at defined velocities.

Backface Signature (BFS): This requirement deals with the amount of indentation or deformation caused by a bullet impact on the non-projectile side of the armor.

Fragmentation Protection: The standard includes specifications for protecting against fragments generated by explosive devices or other means.

Mechanical Resistance: The body armor's construction and materials should provide sufficient strength and durability to withstand normal wear and tear, as well as impacts during use.

Ergonomic Design: BS EN 4569-4:2017 also emphasizes the importance of ergonomics in body armor design to ensure comfort, ease of movement, and user satisfaction.


BS EN 4569-4:2017 is a vital standard that promotes the development and manufacture of reliable and effective body armor. By providing clear guidelines and requirements, it ensures that those who rely on body armor for their safety are adequately protected. Compliance with this standard demonstrates a commitment to quality, performance, and ensuring the utmost safety of end-users. Whether it is military operations, law enforcement activities, or any other security-related field, BS EN 4569-4:2017 plays a crucial role in enhancing personal safety.


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