2 years & up. Enable play to take flight with this charming collection of Sensory Play Stones: Butterflies. The tactile, realistic detailing will inspire curiosity and conversation while providing lots of wonderful sensory feedback. Sturdy bases permit lots of imaginative play possibilities and create solid foundations for children's vocabulary and storytelling skills to grow. To top it all off, the butterflies are easy to clean and able to withstand water, soil, mud, and clay. Set features 8 different types of butterflies.