Complex sentence: A Pelisse is originally a cloak made of fur or which is fur-lined, most notably referring to the dolman hussar regiments wore overhanging their shoulders, which had a fur trim.
Split into simpler sentences: A Pelisse is originally a cloak made of fur or which is fur-lined, most notably referring to the dolman. Hussar regiments wore pelisses overhanging their shoulders, which had a fur trim.