FIA 8856-2018 approved Flat seams for improved comfort Excellent value for money The 'First' range of underwear from OMP is designed to meet the latest FIA 8856-2018 approval and as such offers excellent value for money to the clubman competitor. These long johns are manufactured from 2 layers of flame retardant Nomex material for optimum protection. 2 Layer Nomex material for high levels of protection Flat seams reduce pressure points for improved comfort and reduced fatigue Elasticated ankles and waist for a more relaxed fit Adult and child sizes available FIA 8856-2018 approved