We are offering our fr coveralls are designed to ensure that there are no gaps for sparks and molten splash to get through. Flame retardant boiler suits usually have other special features like studded cuffs and neck (to prevent ingress of sparks) and covered zips (the metal in the zip can otherwise get hot). High-visibility coveralls are also appropriate where people are exposed to hazards from moving traffic, or from moving plant or equipment under the control of an onboard operator.