Description: brand new and high quality Product Features: Forehead Support Structure: no adjustment required, suitable for different face types User-Friendly Buckle Design: easy to wear and simple to operate Multi-venting Hole Design: quiet and safe during treatment Beautiful and Compact: stable and comfortable, very flexible and compact Specifications: Name: NM4 CPAP Nasal Mask Model: BMC-NM4 Material: Fabric + Medical Silicone Size: L, for M, S Color: as the picture shows Work Mode: CPAP Tips: 1. The nasal masks belong to medical consumables. All of them are packed in sterile sealed bags. Their purpose is to better breathe and the service life is generally 1-2 years. 2. For your for health, it is recommended to wash regularly (2-3 times a week). Wash with water, do not wipe with alcohol, avoid direct sunlight. Quantity: 1 pc Note: Transition: 1cm=10mm=0.39inch No retail package. Please allow 1-2cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 x NM4 CPAP Nasal Mask(other accessories demo in the picture is not included.)