2 Packs Replacement Cushion (M) for F30, Size Range from 1.3-1.9 Inch, Reliable Seal & Comfortable Fit, Compatible with Original Frame, Excellent-Value & Durable Replacement Supplies by Everness (M)

• EXCELLENT-VALUE REPLACEMENT - Good value but still works great. Includes two pieces cushions (M) you need compatible with F30 in one pack supplies by Everness. SOFTER FIT & EXCELLENT SEAL - Adopted soft and elastic silicone material which can greatly isolates the air and improves wearing comfort. COMFORTABLE TO USE - There is not a barrier between mouth and nose because we removed the beam in the middle of the cushion. With this design, the cushion does not press against the philtrum area, making it more comfortable to use. SIMPLE ASSEMBLY & DISASSEMBLY - Easy to attach and detach for using and cleaning. Recommended to replace once a month for one piece. CHOOSE THE MOST SUITABLE SIZE - If the range from your left nostril to your right nostril is 1.3-1.9 inches, please choose medium size.