This 600-piece basic pack from Plus-Plus features a vibrant mix of 10 colors and a full-color fold-out booklet filled with building inspirations. This set promotes open-ended creative play while supporting fine motor development, spatial reasoning, and early STEM skills for children 5 and up. This product is free from endocrine-disrupting substances, offering parents confidence in safe everyday play. This compact pack combines easily with other Plus-Plus sets to expand building possibilities at home, school, or on the go.