When choosing a new personal organizer, the first decision is usually the size of the personal organizer. The next important choice is the ring size. Ring size refers to the diameter of the rings that hold the refills. It is measured in millimeters (mm) and indicates the inner diameter of the rings.
To support a wide variety of planning styles, ASHFORD offers six ring sizes ranging from 25mm to 8mm.
Larger personal organizers provide more writing space but also tend to become heavier. Smaller ones are lightweight and easy to carry, though the available writing space and refill capacity are naturally more limited. The choice of ring size helps balance these differences according to your needs.
If portability is your priority, choosing a model with smaller rings — even in a larger size such as A5 — creates a slimmer and lighter personal organizer. It takes up less space in a bag and remains comfortable for meetings, commuting, or writing in cafés. This option is ideal for those who want generous writing space while keeping overall weight to a minimum.
If storage capacity is more important, selecting larger rings — even in a compact size such as MINI6 — allows you to carry significantly more refills. This reduces the need to frequently replace pages and makes it easier to keep schedules, notes, checklists, and other information together in one personal organizer.
The approximate refill capacities for each ring size are listed below. These figures are based on standard refill thickness. Consider how many pages you would like to carry and how you plan to use your personal organizer when selecting the most suitable ring size.
○25mm = Approx. 200 sheets A reassuring capacity similar to a dictionary. Ideal for journaling and document storage.
○19mm = Approx. 140 sheets Large enough to support more than nine months of daily one-page entries.
○15mm = Approx. 110 sheets A standard size offering an excellent balance between capacity and portability.
○13mm = Approx. 100 sheets A slightly slimmer, lighter, and more agile setup.
○11mm = Approx. 70 sheets Well suited for portable everyday schedule management.
○8mm = Approx. 55 sheets An ultra-slim size designed to fit comfortably into jacket or shirt pockets.
For a personal organizer, the rings themselves are among the most important components. ASHFORD develops its ring mechanisms in-house, and their quality has earned the trust of many users. They provide both reliable holding strength and smooth operation. Refills remain securely held in place, while opening and closing the rings for page replacement remains exceptionally smooth.
One of the greatest appeals of a personal organizer is the ability to customize it according to your lifestyle and needs. If you want to organize a large amount of information at home or in the office, an A5 size with 25mm rings may be ideal. If you prefer carrying a personal organizer in your pocket for quick notes and ideas, a MICRO5 size with 8mm rings offers exceptional portability. If you want to carry both work records and personal schedules together, a BIBLE size with 15mm or 19mm rings provides an excellent balance.
By considering not only the size of the personal organizer itself, but also the ring size, it becomes even more comfortable and practical to use. Explore ASHFORD’s extensive lineup to find the model that best fits your daily life. The right personal organizer will support both your thoughts and your time with comfort and ease.
＜Basic Operations & Tips＞
Tips and Precautions for Opening and Closing the Rings
When closing the rings, please be careful not to catch your fingers. For smooth and secure operation with minimal force, place the personal organizer on a wide, flat surface and hold the jacket firmly in place. Position both thumbs on the upper and lower levers, then press gently and evenly.