PRECISE COMPATIBILITY - Designed for N20 . It is and cover only the nose, making it barely noticeable during use. Snug Fit with Excellent Seal - Ensuring a secure fit, the cushions click into the original frame seamlessly, providing a non-bulky, airtight seal that prevents air leakage from the sides. Easy to Use - The cushion is designed for simple assembly and disassembly, making it easy to clean and replace. For optimal performance, it's recommended to replace the cushion every month. Soft Material - Made from liquid silicone, this cushion is softer, and more comfortable, ensuring a gentle fit that can be wear all night without discomfort. Cost-Effective - This set includes two cushions, providing a convenient and cost-effective solution for maintaining your mask's comfort and effectiveness. Specifications: M Color: Transparent Material: Silicone Package Contents: 2 Pack * Replacement Cushions Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.