The label says it is meant for 4+, but upon testing the crayons, I realised they write smoothly and can be cleaned off easily (Very important as I have found markings on the desk and play mats already!) The crayons are also non-toxic. When water is applied, a watercolour effect is achieved, although we have not tested this out.
Here is An starting on a masterpiece:
And here she is on another occasion touching up her work with a pencil:
The crayons are wonderful! :)