Fuxi
Fuxi 9x12 Spiral Sketchbook
Best for: Students and daily sketchers practicing with pencil and charcoal

Moleskine
A soft-cover pocket sketch pad, 3.5 x 5.5 inches, with 48 plain pages of thick ivory paper, small enough to carry in a pocket or bag.
Best for: Sketchers who draw in pen or pencil and want a pad that fits a pocket
The Moleskine Art Sketch Pad (Pocket) is a small soft-cover pad from Moleskine's art collection. It measures 3.5 x 5.5 inches and holds 48 plain pages of thick, ivory paper, a size made for carrying in a pocket or bag.
Moleskine describes the pages as textured for ballpoint pen, fountain pen and pencil, and lists an elastic closure band and a leather-like cover. Ivory paper has a warmer tone than bright white. At 48 small pages, it suits quick sketches and notes more than large pieces.
Based on the manufacturer's Amazon listing.
Small enough for a jacket pocket, so it is there when you want to capture an idea on the bus or in a cafe.
Moleskine says its thick, ivory paper is textured for pencil, ballpoint pen and fountain pen.
Blank pages with no lines or grid, so the whole surface is yours to draw on.
The flexible, leather-like cover keeps the pad slim, and Moleskine lists an elastic closure band and a durable finish.
Moleskine also makes hardcover sketchbooks and watercolor notebooks with heavier paper when you want to step up.
Look elsewhere if: you want far more pages in the same pocket size. The Leda Art Supply Pocket Sketchbook lists 160 pages at 3.5 x 5.5 in.
Moleskine Art Sketch Pad (Pocket)
Choose it for: A Moleskine soft cover in pocket size
Leda Art Supply Pocket Sketchbook
Choose it for: The most pages in a pocket size
Moleskine Art Sketchbook (Medium)
Choose it for: A larger Moleskine with a hardcover
Fuxi
Best for: Students and daily sketchers practicing with pencil and charcoal
Soucolor
Best for: Kids and students who draw every day or need a pad for art homework
MOFUNY
Best for: Mixed media artists and art students who work in several wet and dry media
String & Space
Best for: Sketchers working in charcoal, pastel or watercolor who want thick paper