1.1 This specification applies to flexible closed-cell materials made from polyolefin plastics and blends of polyolefin plastics as defined in Section .1.2 Extruded or molded shapes too small to permit the cutting of standard test specimens are This specification applies to flexible closed-cell materials made from polyolefin plastics and blends of polyolefin plastics. Two types of flexible, closed-cell polyolefin foams are covered: type I - closed cell foams made with polyolefin plastics and