The corners are rounded, so it's safe for small children. Because they are magnetic blocks, they snap together, allowing you to create various things. Using your hands is good for the brain, and you can have fun while expanding your imagination. We will disinfect with alcohol before shipping. The box is not included. This is a used item that a child has played with once. There may be minor scratches or stains, but we appreciate your understanding. We will consider price reductions. Feel free to leave a comment.