Features 1 General section mask headband suitable for all brands of ventilator breathable absorbent durable anti allergic 2 Flexible material composition and advanced functional design in use will feel more comfortable 3 Versatile headband of various nose pieces made of three layers of heat sealing material durable and durable waterproof non toxic 4 The headband is made of heat from the three layers of material strong and durable Instructions When wearing the headband of the four non piercing the buckle into the mask of the two perforated and two hooks will be worn on the head mask to adjust the hook on the elastic hanging that is worn to complete the user can rest assured that use Description Item Type Ventilator HeadbandColor B lackMaterials Breathable FabricStyle Headset TypeSize 68 12 5cmCharacteristic Breathable Absorbent Odorless Package Included 1 x Ventilator Headband More Details