PowerWeld FR cotton welding jackets provide protection during welding while offering lightweight comfort. 9oz material is treated for flame resistance to standard ASTM 6413/ D6413M-12. Powerweld 30 length jackets feature rugged 5 snap front closures, adjustable cuffs, a generous internal pocket, plus a convenient sleeve pocket for scribes, markers or small tools. Sateen weave material provides comfortable movement. Machine washable, they retain their flame resistance for up to 50 home washes.