Capture your big ideas in this 12 inch square Derwent Sketch And Store Sketch Book. It"s perfectly portable and ready to go at a moment"s notice. Just pop it in your bag or backpack. The hard back provides a steady surface on which to create, and the back pocket and elastic stretch band hold loose scraps of inspiration in the book as you venture to and fro, "en plain air." 165gsm (110#) acid free thick white paper is perfect for drawing and painting. 12 inch square page size.