Seawhite Concertina / Octopus Sketchbook
These versatile sketchbooks have 70 (38 for the pocket and mini concertina sketchbook) possible working surfaces - each page is 2 sheets joined together to give extra stability and is supplied with a hard carrying case (with the exception of the pocket concertina sketchbook). Paper weight is 140gsm.
The Octopus concertina sketchbook is slightly different with 8 extending concertina arms each with 4 panels. The All-media paper weight is 220gsm giving excellent rigidity.