Nimble Ninjas is a portable, set-it-up yourself sort of obstacle course! It combines mental as well as physical tasks which are both challenging, and fun. It’s also really, really easy to set up. In fact, it takes less than a minute to set it up! Nimble Ninjas gives you the option to enter your own tasks too. The backside of each card is designed to be writable and reusable! Scatter the cards around the house, or the garden, or any open space you can find. Have you mastered your Ninja cry yet? Dimensions: 5*8 in Contents: 27 Green Nimble Ninja Action Boards | 13 Yellow Nimble Ninja Breather / Cooldown Boards | 10 Red Nimble Ninja Fierce / Advance Boards. Note: The backside of all the boards can be used to make your own set of Fitness Regime / Challenges.