Item Type: Respirators Material: Medical Silicone Size: S: 80 – 90 mm / 31.50 – 35.43 inch, M: 90 – 100 mm / 35.43 – 39.37 inch, L: 100 – 115 mm / 39.37 – 45.28 inch Weight: 100 g / 0.22 lbs Features: Providing a more comfortable experience and making therapy easy to accept. Face matching headgear. 360 degree rotatable elbow: flexible tube position makes minimal effect to sleep. Diffuse Vent Hole: gentle and quiet exhaust. Anti-choke Vent Design: Provides fail-safe operation. Dual Direction Adjustable Headgear: Ensure the most comfort and stability. Breathing Headgear: Ventilation fabric ensures tough inner core. Humanized Design: Ergonomic streamline face touch. Package Includes: 1 x Set
