This is my Urban Sketching Sketchbook number 6. It’s 10″ by 7″ (26cm x 18cm), which is a bit smaller than A4.
The paper is Fabriano Artistico, with deckled edges.
The cover is a sort of leather-look man-made substance. It remains to be seen how strong it is. The bulldog clips leave an indentation in it, see the lower side in the picture below. The Etchr Lab series offer several “perfect sketchbooks”. This is the “Signature Series” , which are the only ones so far that are portrait orientation rather than square or landscape. This was a “limited edition”, shipped from China, and is no longer available.
For posts using this sketchbook see, for example: