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"".