Haspro Fly Kids Universal are reusable earplugs intended for children over 4 years of age. earplugs were designed to protect the hearing of the little ones, to protect against the irreversible effects of children exposed to excessive noise. They are made of soft and hypoallergenic silicone to ensure comfort in use. earplugs protect your hearing, and thanks to the appropriate filter structure, they ensure the filtering of the ear canal and also reduce the pressure during the plane flight, eliminating the feeling of clogged ears during takeoff and landing. Haspro Fly Kids universal sockets have a handy aluminum housing for easy and hygienic transport.