One-Touch Sizes Explained

The number on a one-touch magnetic holder is the maximum card thickness it will take, in points — and a point is one thousandth of an inch. A 35pt holder accepts a card up to 0.035 inches thick. It does not describe the holder's own thickness, which is what trips people up on their first order.

A standard modern base card is roughly 20pt, so it goes in a 35pt holder with a little room. That single fact covers most purchases. The other sizes exist for thicker stock: jersey inserts, relics, patches and booklets, which climb through 55pt, 75pt, 100pt, 130pt and 180pt.

If you do not know a card's thickness, the point system and the common card types mapped to it are laid out in the card thickness points chart. That page is the companion reference to this one and covers toploaders and semi-rigids alongside magnetic holders.

Too small is the damaging error. Forcing a card into a holder that will not take it bends the card against the magnetic seam, and that crease is permanent and immediately visible to a grader. If a card does not slide in with no resistance, it is the wrong holder — stop and size up rather than pressing the halves together.

Too large is cosmetic rather than destructive, but it is not harmless. A standard card in a 100pt holder sits loose, shifts when the holder is handled, and rattles against the inner edges. Over time that movement is its own slow source of corner wear, and on display it simply looks wrong — the card floats in a visible gap.

Either works, and it changes the size you need. A penny sleeve adds a small but real amount of thickness, and a standard card in a sleeve can bind in a 35pt holder that would take the bare card comfortably. If you want to keep the sleeve on — which is reasonable, since it means you never touch the card surface again — buy 55pt for standard cards instead.

For display purposes most collectors go in bare, because a sleeve introduces a visible extra layer and sometimes a slight haze under the acrylic. For cards you expect to handle, move or eventually submit for grading, sleeved is the safer habit. Sleeve options are in best penny sleeves, and the sleeving sequence itself in how to sleeve and toploader a card.

Ultra Pro states UV-blocking additives in the one-touch line, and that is a genuine feature rather than marketing alone. It is also not a licence to put a card in direct sunlight. UV additives reduce transmission; they do not eliminate it, and they do nothing about heat, which is the other half of what a sunny shelf does to a card.

Treat the UV rating as insurance against ambient room light over years, not as protection against a window. Where a card sits matters more than what it sits in. The display-specific version of this problem is covered in best UV protection display cases.

• 35pt — buy in quantity. This is the working size. A pack of these covers almost every card you will want to display.
• 55pt — buy a few. For sleeved standard cards and thin inserts. Cheap insurance against a card that binds.
• 100pt — buy as needed. Patch cards arrive occasionally and you will know which ones they are.
• 75pt, 130pt, 180pt — buy per card. Stocking these speculatively is money sitting in a drawer. Order when a specific card needs one.

Our picks across the whole line, with the loading and handling detail, are in best one-touch magnetic holders. If you are deciding between a magnetic holder and a rigid alternative in the first place, see one-touch vs screwdown and toploader vs one-touch.