resplabs CPAP Mask Liners Compatible with Most Nasal Masks - Reusable Cushion Covers, Reduces Noisy Air Leaks & Provides Comfort (Pack of 4)Brand: RespLabs Medical Inc. Color: Blue Features: Enhanced Comfort: The soft, breathable fabric cushions your skin, minimizing sleep interruption and redness. Reduced Noisy Air Leaks: Liners help create a better seal between your mask and face, minimizing air leaks for more efficient therapy. Improved Sleep Quality Enjoy a more restful night's sleep with reduced mask discomfort. Easy to Use: Liners install quickly and securely onto your CPAP mask.