I'm the most responsible Gecko of them all - I'm filled with 100% recycled FSC certified cartridges paper. At a good wieght too, I'm suitable for all - media including a light watercolour or ink wash. Robust, soft touch matt black covers which are both durable and wipe clean. Each artgecko sketchbook has a textured green protective sheet for added style and is perfect for placing between pages. Each twin wire Eco Gecko contains 40 sheets of 150gsm / 101lbs superior acid free all - media toothy, medium surface white recycled cartridge paper. Perfect for all media, from sketching pencils to light water colour washes. This Sketchbook is suitable for all artists.