Back in the day when I was looking for a perfect watercolor paper block (I came to the conclusion that I just use too much water to work on blocks) - I got this little 4x8" block of Fluid watercolor paper to try. I liked the unusual format. The paper itself performs ok, at least in this size. It does curl and buckle a bit but overall it was quite suitable for my purpose (to play with little imaginary landscapes).  I might not get more of it, but I won't throw it away either.

"Fog." 4x8" watercolor on Fluid CP 140lb watercolor paper.

"Autumn." 4x8" watercolor on Fluid CP 140lb watercolor paper.