ongeveer 14,5x22cm. Organize your life in style with the Dylusions Dyalog system. Dyalog Covers, featuring original artwork by Dyan Reaveley, offer a stylish way to keep all your Dyalog Insert Books, Pocket Inserts, and more in one convenient location. Two interior elastic bands help keep your inside elements secure while also giving you the ability to change books easily. The outside elastic band helps keep the cover closed. Dyalog Covers are available in two signature designs and each measures 5.875x8.75inch.