PicassoTiles 100 Piece Theme Building SetFeatures PTB100 SAFARI are soft, rubbery, interlocking bristles that stick together at any angle makes it easier to build. PTB100 SAFARI provides a good way to develop children's creativity at a young age. Your children can acquire a strong sense of color, geometrical shapes, & architectural design. PTB100 SAFARI bristle block set has different brightly colored pieces which provide kid's endless building possibilities. PTB100 SAFARI bristle block set