Adult Colouring Crayon Collection Discover the latest craze, and the benefits of, adult colouring. meditation colouring allows us to switch off our brains, relax in the moment and alleviate anxiety. Create beautiful images, suitable for framing, using the Paper Crafter Crayons. These highly pigmented crayons offer smooth, vibrant colour like you've never experienced. For detailed areas sharpen with the GRIP® Trio Sharpener included. Includes: Highly pigmented wax crayons that are permanent, waterproof, break resistant and acid-free. Sharpen with the GRIP® Trio Sharpener.