Plus-Plus is a new kind of construction toy. Its one simple shape produces endless possibilities - assemble them flat to create a 2-D mosaic or work in 3-D to make more complicated structures. Even curves are possible thanks to the unique design of this deceptively simple shape! This 300 pieces basic pack comes with a mix of 10 different colors; basic red, basic orange, basic yellow, basic green, basic blue, basic purple, gray, black, and white. Also includes a full-color, fold-out booklet with inspirations for your creations! Designed and made in Denmark. BPA-free and phthalate-free. Suggested for ages 5-12. Each piece measures .75" x .5" (20mm x 12mm).