Fropper features a unique spring system that links the 2 level seat, creating a fun and stimulating ride-on experience like no other. The curved seat ensures a secure berth and caster wheels allow your toddler to easily change direction. Fropper folds to a fraction of its original size making it convenient for parents to carry and store! Holds children up to 55lbs. Ages 18m+. Adult set up required. IPOD5111