Knee protectors with the EN 14404:2004+A1:2010 rating are tested for protection against continuous pressure, penetration by sharp objects, and impact absorption. This ensures the knee pads provide adequate safety and comfort, helping to prevent injuries when kneeling.

PPE stands for "personal protective equipment." PPE Category 2 refers to equipment that is more complex, and has a higher level of risk. Examples of PPE Category 2 include safety helmets, ear protection, and fall arrest equipment. In Europe, PPE Category 2 must meet certain safety standards set by the European Union, which means that it must be designed and manufactured to protect the user without causing harm. Companies that make or sell PPE must prove that it meets these standards. They also must have a quality management system in place and have to be audited regularly by a notified body.