FidlBitz Foam Cube Deluxe STEM SetFidlBitz are revolutionary cubes that stick together but are not sticky. Designed by a chemist, each 1cm cube simply sticks together and allows you to build, shape and create. If you can think of it, you can build it! Stack, link, shape, build in 2D, 3D or simply squish together for a sensory overload the crackle noise is awesome! FidlBitz is a genius toy that inspires creativity and provides open ended, unplugged fun. Product features: Includes 60g