Developed to comply with new regulations for many FIA International race series from 2023, these Tecnica Evo women's knickers are manufactured from a flame retardant material for additional protection. To comply with FIA regulations they must be worn in conjunction with FIA approved long johnsMeets FIA approval for international racing from 2023Made from flame retardant materialDesigned to be worn in conjunction with FIA approved long johnsFrom 2023 many FIA International race series will not permit regular underwear to be worn under approved long johns. These knickers from OMP satisfy the requirements for FIA approval.FIA 8856-2018 approved only when worn with FIA 8856-2018 approved long johnsSizes:XS - OMP Suit size 38-40S - OMP Suit size 42M - OMP Suit size 44L - OMP Suit size 46XL - OMP Suit size 58-50