Painter v2 - 50 x hydration paper sheets (RedGrassGames)This single use hydration paper for the Painter v2 wet palette is the perfect match for the foam. It sticks on it, and does not create bubbles. 100% of the paper is in contact with the foam, for perfect hydration. It will not curl after the easy setup. It was particularly selected to offer the best performance with hobby paints and level of dilution used in hobby painting.