Plus-Plus is a new kind of construction toy. Its one simple shape contains endless possibilities – assemble them flat to create a 2-D mosaic or work in 3-D to make more intricate builds. Even curves are possible thanks to the unique design of this deceptively simple shape! Precision crafted in Denmark, all Plus-Plus sets are compatible with each other.The BIG size is perfect for smaller hands or bigger ideas. This 15 piece tube set contains Basic Colors, including Red, Blue, Green, Yellow, Orange, Purple and more.