This is our biggest tube ever! Plus-Plus Super Tube features 500+ pieces in a reusable, travel-friendly container. Whether for young kids, tweens or 'kidults', everyone will love using their imaginations with Plus-Plus Tube mixes. Just one simple shape will give them endless possibilities and hours of fun. Plus-Plus is precision crafted in Denmark and are BPA-free and phthalate-free european plastic. Their vibrant colors will show off their creative flat mosaic or 3D designs, as well as stimulate their innovative talents.