99% cotton Pyrovatex FR-treated 350 g/m sateen weave material with 1% Negastat anti-static yarn.
Tape - flame-retardant reflective material.
Garment conforms to EN340:2003, EN ISO 11611:2007 A1 class 1: 50 washes, EN ISO 11612:2008 A1 B1 C1 E3 F1: 50 washes, EN1149-5:2008 and EN61482-1 class 1.