KB424 stackable booster seats are designed to safely provide children with a pleasant watching experience in theatres, auditoriums or arenas. The 36 cinema booster seats furnished in the package are made of seamless plastic, come with rounded corners and have a large granular top surface that accommodates children of different ages (from 3 years old). Their molded-in resistance ribs are designed to be gripped to the seating surface ensuring stability but with no damage on fixed cinema seats. Moreover, for easy storage and carrying, the shipment includes a heavy-duty two-wheel rolling cart in black.