520 pieces feels like a lot. The beads are all different shapes and textures. Most are great for little hands, but I was surprised at a tiny group. Some have prongs and others do not. Some have one prong and others have two or none. So the children have to figure it out and how to piece them together to make a necklace. Some of the beads are harder to pop together and my children have needed help. Some are hard to take apart. Overall, my kiddos love them and say they look like Moana and Maui with their jewelry on. Packaging is also cute and makes it easy to keep the beads together. Travels well....