There are three formats of this workbook available- one for small pens, one for big pens, and one for iPads. You can also purchase the pen versions (small and big) as a bundle.
Not sure which pen you are using? The only difference is the size of the traceable sections- slightly smaller for pens with small tips, and slightly larger for pens with big tips. The choice is entirely yours- many people use both!
Some SMALL pen examples: Tombow Fudenosuke, Pentel Fude Touch, and similar.
Some BIG pen examples: Tombow Dual Tips, Koi Coloring Brushes, Pentel Aquash, and similar.
With each workbook purchase, you will receive an instant PDF downloadable file. Due to the digital nature of this product, refunds are not available.