Provide exciting and educational activities for your early learning environment! These colorful construction toys help little ones develop hand-eye coordination, spatial thinking, and creative problem-solving skills. Children also learn math skills while sorting, counting, designing, and constructing. Large pieces are safe for children 18 months and older. Each set comes in a durable clear plastic bin with lid and a convenient handle to move from room to room. Storage tub measures 15 1⁄2"L x 11"W x 6"H. 3+ Set includes: Includes Silly Star Connectors (116 Pieces), 3-D Building Blocks (84 Pieces), Criss-Cross Connectors (400 Pieces) and Totally Tubular Pipes & Spouts (80 Pieces).