HYGIENIC: Disposable filters are clinically proven to prevent the transfer of mucus or bacterial germs to the snot sucker when clearing stuffy noses. Replace filter after every use. COMFORTABLE + NON-INVASIVE: NoseFrida creates a seal with the outside of the baby's nostril for gentle snotsucking. DISHWASHER SAFE: The blue nasal tube, red mouthpiece, and filter cap are top-rack dishwasher safe for easy cleaning. PEDIATRICIAN RECOMMENDED: BPA + Phthalate-free. Safe for all ages. BABY REGISTRY ESSENTIAL: Includes 1 NoseFrida and 4 Hygiene Filters