Fat Brain Toys Hexactly Set of 24 congruently cool and colorful hexagonal building blocks accompanied by 18 challenges; precise angles, thick blocks result in satisfying, cohesive structures Connect their angular edges to create all kinds of brilliant structures; endless artful building possibilities; try to solve the 18 design challenges  over 50 possible solutions Innovative fun for all ages 3+; made of strong, high-quality wood; fully safety tested Engages imagination, complex thinking, visual-spatial acuity, creativity; inspires exploration, experimentation; strengthens logic, planning, critical thinking Includes 24 blocks in 5 unique styles: single hexagon, 2 to 4 hexagons joined in linear arrangement, 3 hexagons joined in non-linear arrangement; hexagons each measure 1.25 x 1.5 x 0.75 inches Strengthens fine motor skills Visual-spatial skills Encourages creativity Engages the imagination Inspires complex thinking Features illustrated building guide Includes 18 challenges to try Includes facts about hexagons in nature Sturdy storage box