Large Hardcover Notebook

The Hypothesis

Give your ideas room to breathe.

Ideas aren't meant to be all cramped up. The Hypothesis series comes with 192 of our signature split-use pages so your ideas have plenty of room.

We polled more than 4000 people and determined that split-use pages provides a unique way to work with ideas as a big spread. Having paper for sketching, problem solving, or data gathering on one side and lines on the other means that the right side can be used for taking notes or longer writing passages, with the left side reserved for annotations and illustrations. Treat each pair of pages as a single space to let your thoughts run free.


Fountain Pen Friendly

Ink does not feather or bleed, very fast dry time, slight show through. For best results, use a small to medium tipped fountain pen.


Lay-Flat Sewn Binding

Every one of our notebooks is constructed with sewn bound signatures so that from the first page to the last our notebooks lay flat.


Recycled Paper

100% recycled FSC paper and cover board.


Paper Weight

Paper at a weight that begs to be written on.


Portland, OR

Proudly designed at our studio in Portland, OR.



Cover art that's as smart as you.


Water Proof Covers

Coated to prevent against drips and spills from ruining your work.


Page Count

Plenty of pages to let your ideas spread out.



At 7 x 9 inches it's perfect for everyday.

Available Inside Pages