12 months & up. The Chunky Soft C Rings Manipulative Set is ideal for imaginative play! The chunky building links are easy to connect from any direction. Ideal for small hands, this set is great for fine motor and manipulative areas and for the young architect who is just starting to build. Comes in its own stackable container for storage. Set contains 60 pieces in red, yellow, blue, green, and orange. Each piece measures 2.2" x 2.2" x .75".