How to Choose the Size of the Nasal Mask? Please refer to the following demonstration: If the width of your nose is 33mm~37mm, please choose Size M; If the width of your nose is 37mm~42mm, please choose Size L; Product Features 1. 4-Point Headgear Support Distributes pressure more evenly across the face for a more stable fit and fewer mask adjustments during sleep. 2. Soft Silicone Nasal Cushion Soft silicone conforms comfortably to the contours of the nose, helping reduce localized pressure during extended wear. 3. 360° Rotation + 45° Adjustment The elbow rotates 360° and adjusts up to 45°, allowing flexible tube positioning and helping reduce hose pull while you sleep. 4. Open-Face Design Keeps the eyes and mouth unobstructed for a wider field of view and greater freedom to read, use a phone, or communicate while wearing the mask. 5. Quick-Release Elbow Allows the air tube to be connected or disconnected without repeatedly removing the entire mask, making nighttime movement, daily assembly, and cleaning more convenient. 6. Approx. 23 dBA with Noise-Reduction Cover Operating noise is approximately 23 dBA when used with the noise-reduction cover, helping create a quieter environment for more comfortable sleep. Package List Choose according to your needs: Type 1: NS8 Nasal Mask x 1PC Type 2:1PC Nasal Mask + 4PCS Nose Pads Type 3:1PC Nasal Mask + 4PCS Nose Pads + 2PCS Buckles

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