4 Sensory Jars are packed with materials to facilitate exploration and naturally encourage children to play, create, investigate and explore.The themes include1) Ocean - water beads, ocean critters, and shells.2) Dinosaur - motion sand, dinosaur critters, pebbles, and other sensory material.3) Animal - Natural hand-made taste-safe sensory playdough, animal critters, pebbles, and other sensory material.4) Construction - Motion sand, construction toy and pebbles.