Insulated flame retardant cold-proof suits are professional winter protective clothing developed for front-line workers engaged in low-temperature outdoor and indoor operations with fire and high-temperature hazard risks. In cold winter environments, ordinary warm work clothes cannot resist flame and high-temperature hazards, while single-layer flame retardant work clothes cannot solve the problem of low-temperature frostbite, making workers face dual safety risks of cold injury and flame injury. This multi-functional integrated suit perfectly combines thermal insulation, cold resistance, flame retardancy and high-temperature resistance, providing all-round safety protection for workers in winter low-temperature and high-risk operation scenarios such as outdoor electric power construction, northern mining operations, winter welding construction and petrochemical winter maintenance.

The suit adopts a three-layer composite structure design of outer flame retardant layer, middle thermal insulation filling layer and inner warm skin-friendly layer. The outer layer is made of high-strength intrinsically flame retardant fabric, which has stable flame retardant and heat-resistant performance, can effectively block flame impact and high-temperature heat radiation, and resist external wind and snow erosion. The middle thermal insulation layer uses high-density hollow thermal insulation cotton, which has excellent air storage and heat preservation performance, can lock body heat for a long time, effectively resist low-temperature frostbite in sub-zero environments, and will not harden, agglomerate or lose thermal insulation effect in cold weather. The inner skin-friendly layer is made of soft and breathable fine textile fabric, which is comfortable to wear, absorbs sweat and keeps dry, avoiding the cold discomfort caused by sweat condensation in low temperature.

The structural design of the winter insulated flame retardant suit focuses on both warmth and operational flexibility. The whole body