18 months & up. Encourage children's connection to the world around them with a nature-inspired sensory toy like Sensory Leaves. Subdued natural colors, various lusters and sheens, different textures, and a crinkle sound in select leaves encourage young children to explore. Incorporate into loose parts play or encourage children to sort leaves. Set includes 30 leaves. Largest leaf measures 5" x 3" and the smallest leaf measures 3.75" x 3.75".