Stones are a wonderful natural resource that children find hugely appealing. This satisfyingly smooth set of 12 tactile stones has been created to Inspire children's natural curiosity as they Explore and sort. Older children will enjoy sorting by color, ordering by size, stacking, and matching, while younger hands will simply like to hold and experience the different sizes and weights the set offers. Each set includes 12 stones in 3 different sizes and 4 colors, and a storage bag.