Your mask has 2 layers of material with an internal section where you can insert a filter for added protection if you wish. The aluminium strip in the top can be moulded to fit around the bridge of your nose. Please adjust and fold the mask with care as aggressive handling may cause the strip to break. The elastic has been left untied so you can adjust it to fit and is removable so it can be replaced with tape or ribbon. Please avoid touching your face mask when wearing and always wash your hands if you need to adjust it. Your face mask should be washed in a normal 40 degree cycle with detergent or hand washed with detergent after every use.