The present disclosure relates to a communication method and system for converging a 5th-Generation communication system for supporting higher data rates beyond a 4th-Generation system with a technology for Internet of Things. The nursing system comprises a feeding bottle, a nipple and a sleeve. Furthermore, the protective film of the present invention is composed of a cured product of the above photosensitive resin composition. The wheelbase is reduced by bringing the front wheel closer to the front seat position.