Elbow, shoulder, knee and hip impact protectors are to be present in Class AAA and AA garments as a mandatory requirement, with the hip protectors being optional in Class A garments. EN 1621 impact protectors must be positioned in the garment so that they cover the appropriate body part, according to the relevant impact protector standard.
Class B garments are designed to provide the equivalent abrasion protection of Class A garments but without the inclusion of impact protectors. Class C garments are designed to provide impact protection for areas covered by the impact protector(s) only, and they do not offer minimum abrasion protection. Class C garments are intended to be worn with and supplement the protection offered by Class AAA, AA, A or B garments.