MULTIPLE MATERIAL SINGLE PLANE HEADGEAR

摘要

A headgear assembly (30) includes a first sub portion (D1) formed from a generally planar first material and a second sub portion (A1 B1 C1) formed from a generally planar second material. The second sub portion is coupled along an edge face to an edge face of the first sub portion without overlapping the first sub portion. The second material differs from the first material by at least one physical property.