All Loop products have a declaration of conformity and are in compliance with the laws covering PPE (personal protective equipment). We test extensively and all our products are officially certified as hearing protection. The certifications that our products comply with are the following:EU Certification Standard: EN 352-2:2020US Certification Standard: ANSI S3.19-1974 (ASA STD 1-1975)Loop Quiet US Declaration of ConformityEU Declaration of ConformityLoop ExperienceUS Declaration of ConformityEU Declaration of ConformityLoop Experience ProUS Declaration of ConformityEU Declaration of Conformity