PERFECT ADAPTATION - Designed to work perfectly with Nosefrida Nasal Aspirator and other similar brands. EASY TO USE - Simply insert one of new filters after disposing of the old one, and you are now ready for your next call of duty. PREMIUM QUALITY - Filter Refills are made from premium high density foam. HIGHLY EFFECTIVE - Hygiene filters help clear baby's stuffy nose in a hygienic way. Replace filter after every use to maintain effectiveness. VALUE PACK - Comes with generous 120 disposable filters per package. 6 x more than the brand name one.