The fibres used in this fabric include 60% Modacrylic, an inherently flame retardant fibre that does not combust, the fibres are difficult to ignite and will self-extinguish, providing natural flame retardancy without the need for an FR chemical treatment in the textile process. These fibres are blended with 39% cotton and 1% carbon fibre for added strength and protection against electrostatic discharge hazards. Features and BenefitsInherent flame resistant qualities will not diminish with washingProtection against radiant, convective and contact heatBack pocketRule pocketQuick and easy side accessAction back for extra freedom of movementTriple-stitched seams for extra durabilityConcealed brass zips on chest pocketsHook and loop cuffs for a secure fitTwo tier knee pad pockets allowing two positioning optionsSew on flame resistant industrial wash tapeRadio loop for easy clipping of a radioTwo-way front durable brass zip for easy access40+ UPF r