The headgear assembly includes a strap of a first flexible material with an elongated edge and a second flexible material that is folded around the elongated edge and extends along the elongated edge. . The second flexible material can be an elastic material. The second flexible material also includes the first flexible material such that the first flexible material can be composed of two flexible materials laminated together or joined end to end. Intersections or joints in the material can be coated.ヘッドギアアセンブリは、長細縁部を備えた第１の可撓性材料のストラップと、長細縁部の周囲に折り畳まれかつ長細縁部に沿って延びる第２の可撓性材料とを含む。第２の可撓性材料は、弾性材料であり得る。第２の可撓性材料はまた、第１の可撓性材料が共に積層されるかまたは端から端まで接合された２つの可撓性材料から構成され得るように、第１の可撓性材料中の交差または接合部を被覆し得る。
