This gigantic 4-pack of STEM Playground is perfect for schools or anyone looking to build an epic course. The set includes:

8 interlocking mats - each 20 x 20 inches, creating a whopping 44 square feet of surface area

88 flexible surfaces of different sizes: for walls, jumps, seesaws, hoops and more

160 pins - multifunctional mat, surface and sensor connectors

4 Sensors: Wireless accelerometer sensors complete the set  adding timers, scoring or interaction with the robot

2 storage bags to carry