Coats Firefly is a flame-resistant sewing thread made from 100% spun meta-aramid fiber, designed to provide exceptional protection against heat, flame, and electric arcs up to 371°C. 

It is used in protective wear applications such as firefighter clothing, industrial workwear, safety jackets, gloves, and military combat suits. 

The thread offers high durability, flame resistance, color consistency, and excellent sewability, meeting stringent safety standards and military specifications. 

Key features include:

• High melting point (371°C) with no melting or dripping. 
• Exceptional flame and heat resistance. 
• Minimal fault levels and 100% traceability. 
• Special dyes for wash fastness and color consistency. 
• Unique lubricated finish for seam integrity. 

It is certified by Underwriters Laboratory and other organizations for compliance with fire fighting, industrial protection, electrical arc resistance, and military specifications, including NFPA, EN ISO, ASTM, and US Military standards.