Complex sentence: Following the riots of the late 1970's and early 1980's, the current manufacturing now uses stronger man made material, with a shell made of cloth covered vacuum formed plasticand a foam headband lining.
Split into simpler sentences: Following the riots of the late 1970's and early 1980's, the current manufacturing now uses stronger man made materials. The shell is now made of cloth covered vacuum formed plastic and a foam headband lining.