Fat Brain Toys Reptangles Set of 24 turtle-shaped construction blocks that snap together in over 100 different ways; outstanding ingenuity, modern design, endless construction appeal Build geometric masterpieces; construct simple to complex polyhedra; build creatively or challenge yourself with the included 80+ builds and 50+ puzzles; do you have the smarts to build a rhombicuboctahedron? Recommended for ages 6+; high quality, precision plastic construction; adheres to all necessary safety standards for US and Europe Inspires mathematical thinking, creativity, inventiveness; strengthens fine motor skills, visual-spatial skills; exciting lesson in advanced geometry; thousands of play possibilities evoke innovation and curiosity Winner of 2013 Major Fun Award Puzzles, 2013 Major Fun Award Thinking Games, 2010 Parents' Choice Award Recommended, 2010 Creative Child Preferred Choice Award; packaged in durable storage box; made in China Builds mathematical thinking Easy introduction to complex geometry Thousands of play possibilities Inspires innovation and curiosity Captures the imagination Modern design, endless construction appeal 80+ builds, 50+ puzzles included Packaged in durable storage box Features full-color exploration guide