Ooly- Enjoy silky smooth coloring and amazing watercolor effects with Smooth Stix watercolor gel crayons. This set of 6 gel crayons come in a travel carrying case too. Water soluble and washable gel crayons Use a paint brush and water to create a watercolor effect 1 Brush included Will not dry out Twist up plastic barrel Reusable travel case Set of 6 colors Suitable for ages 3 and up