Happy Breathing replaceable filters help prevent mucus from entering the device, ensuring a hygienic and effective experience every time. These filters support suction power and extend the life of your Happy Breathing, while prioritizing your baby’s health. Filters are available in white. Hygienic & Effective: Disposable filters prevent germ buildup by blocking mucus from entering the device. Replace after each use to maintain optimal suction performance.  Easy to Use: Simply insert the filter into Happy Breathing mucus trap. Discard after each use. 100 Filters: A generous supply of replacement filters for busy parents on the go. High Quality: Crafted from high-quality foam, BPA and latex-free. Designed for Happy Breathing: For best results, use Happy Breathing Filters with your Happy Breathing device.