Formula Sports Tumble Tower has 60 large wood blocks; the aim of the game is to stack them up. 3 per row and try to remove a block from each row and then place it on top of the precariously unstable tower. creating another row of 3. This is a game of skill. analytics and exceptionally steady hands.The 60 large robust blocks are made of high quality wood. Each block measures 12cm x 4cm x 2.5cm. Suitable for indoor and outdoor use. Comes in a full colour box with detailed instructions. Ages 5 .