"Dog ear notebook" is so named because of a cut-off-able corner on every page.
You can choose to have it on the top right or the bottom right because it is identical either way up, except for the position of the logo on the cover.
The sheets inside are gridded in light blue lines, 3mm apart.
The makers believe that this is the optimal and most flexible - it is suitable for accurate drawings, free drawings, and writing.
Hum is a collaborative line of stationery from design firm Graf and stationery makers Hightide.
The project initially began as a custom made line for use within the Graf company, but they eventually decided that it would be a waste not to share it with everyone else.
Subtitled "quality to create fresh ideas in daily life", each product is designed to help you 'think, catch, draw or stock' - the process by which creative ideas are produced.
The vivid colours are energizing and inspiring, and every last detail is geared to propel your ideas forward.
In Japanese "hum-hum" means, roughly, "oh yes, i see", and implies a bit of thoughtful chin-rubbing.
That meaning is combined with the English "to hum", the significance of which comes from one of the designers at Graf who always starts humming when things are going well at his desk.