The Moleskin Red Notebook is just the right size at 3-1/2" x 5-1/2."  The exterior elastic keeps the notebook pages secure.  The pages are a decent weight, and I like that they are lined.  The notebook fits into my purse easily, and the color makes it easy to find.  I ordered two of these Moleskin notebooks and will be ordering more in the future.  I use one for meeting notes and the other for tracking the food I consume every day.  The binding is firm and just wide enough for a small label making it easy to locate when stored.  Personally, I think this is the perfect notebook.