Complex sentence: Many of the constructions possess the basic structural characteristics of a quilt, being made two distinct layers of predominantly fabric or fabric like materials that are held together by pierced elements that are distributed throughout the surface of the work.
Split into simpler sentences: Many of the constructions possess the basic structural characteristics of a quilt. These are made of two distinct layers of predominantly fabric or fabric like materials that are held together by pierced elements that are distributed throughout the surface of the work.