These tiles turn any floor into an interactive and responsive surface. Simply walk on the tiles and the liquid moves and reacts to the pressure of your foot. Commonly used in sensory rooms, these tiles create the feeling of a liquid room, with responsive reaction from the floor with every step helping to create the perfect setting for a relaxing sensory experience. Ages 2-10 Pack of five assorted tiles 20" diameter each Nonslip back Each tile is pressure tested with 32 tons of direct heavy pressure for 8 hours Plastic Imported