Helps to protect you from molten metal; sparks and flames Additional coverage made from the flame resistant Tecaweld cloth (a blend of 75% cotton and 25% Kevlar fibres) Suitable for use with the Speedglas 9100; 9100 Air; 9100 FX; 9100 FX Air Not suitable for Speedglas 9100 MP - you will require part number 169001