Our recommendation for our colouring and drawing products is for ages 2 And up. But if your baby or child knows how to hold a pen, our products are definitely safe to use. Do be aware that the pen caps may be hazard if swallowed as they can cause children to choke so children should always be supervised when playing/
As for upper age limit, I myself have enjoyed colouring on the DrawnBy: Washable Silicone Drawing and Colouring Mats and a lot of adults tell me that colouring these designs are therapeutic for them too! There's really no restriction to what age can have fun with the DrawnBy: range of products!