In replacement of the level 1 and level 2 rating system, a new class system was introduced. Class AAA garments provide the highest possible requirements, whilst Class AA and Class A garments each have lower requirements respectively. Two specialist classes are available, Class B garments provide abrasion resistance however do not require impact protection to be present and Class C garments are to be worn as part of an ensemble and have no abrasiom resistant qualities however have a least 1 impact protector present. This class would be used for garments such as base layers.