18 months and up. Encourage innate play patterns and stimulate sensory exploration with these Plush Sea Stars. The high-contrast colors, assorted textures, and compelling auditory components of these stars will strengthen toddlers' fine motor skills and introduce them to a variety of colors and shapes.andnbspLarge star measures 12" x 12" x 2", medium star measures 6" x 6" x 1.5", and small star measures 3" x 3" x .5".