An 8-inch e-reader is about the same size as a small tablet. This gives you a relatively large screen, so you can read your book comfortably. But you can still easily take e-readers of this size with you in your bag. This way, you can also read your book on the train or on vacation. Choose a water-resistant e-reader if you often read in the bath. There's no risk of water damage to your device. Do you want a compact e-reader for travelling? Choose a smaller size..