These calendars are free for personal use. Each month I create a calendar with a new image. All my images for the calendars are created on the iPad using Adobe Ideas. These vector graphics can scale to any size without loosing quality. Below is an example of the same image, used in the calendar, as if it were on a wall. I license the use of these images on my store. If you are interested in creating a large scale image in your home or office, please take a look at my image library.