The first in the series contains just about every type of design you can think of; flowers, nature, geometrics, repeating patterns, animals, houses, abstract ink blot styles, zentangles, food, swirls, cutlery, crashing waves and random objects. I can see why they decided to call it 'The One and Only' because it seems as though it has a bit of everything all in one!
The sequel has lots more of the same but with some new additions like people, skulls, stars, hipster moustaches, paisley, bird cages, feathers and bubbles. It's a fantastic series to give to someone new to colouring who wants to dabble in different styles, or as a travel book as they are slightly larger than A5 in size. Take a look through both books and see what you think.
The One and Only Colouring Book for Adults
The Second One and Only Colouring Book for Adults
With so many random themes, different levels of complexity and a diverse range of linework from fine to bold, these books are in my opinion something every colourist should have in their collection. There's also a third book coming out later this month, and four accompanying books in the series- see links below.
Here are my finished pictures, as I mentioned using Tombow brush pens and Staedtler Triplus.