These are the cutest little erasers that are shaped as assorted sea creatures. They come in a set of four inside their own small durable hard plastic travel box that can be used for almost anything. The erasers themselves are non-toxic, contain no lead and are eco-friendly. The erasers are small, measuring 1 - 2" in length, so they are not recommended for children under 8 years of age. They're real erasers, but do double duty as a collectable and toy to play with.