Everything that keeps a card in the condition it was bought in, in one place. CardSpicy indexes cards from Pokémon, One Piece, Gundam, Dragon Ball and Naruto, and this page is the starting point for the sleeves, holders, boxes and storage that go around them.
The one idea worth taking away: card protection is four layers, not one product. Each layer answers a different kind of damage, and a collection is only as safe as the layer that is missing. Working out which layer you are missing is faster than buying the thickest thing on the shelf.
Quick answer
CardSpicy’s accessories hub covers the four layers that keep a card as it was bought — sleeves, holders, boxes and storage — across 8 sections.
The four layers
| Layer | What it stops | Read this |
|---|---|---|
| 1. Sleeve | Handling: fingerprints, dust, surface scuffs. The layer that touches the card. | Sleeve thickness, by use |
| 2. Rigid holder | Pressure: bending, crushing and anything stored under load. | What fits a graded slab · storage boxes |
| 3. Box | Movement, dust settling and light, once it is closed. | Storage boxes explained |
| 4. The room | Humidity, temperature cycling and light over years — the slow damage nothing else stops. | Humidity, light and long-term storage |
Most collections that get damaged in storage are missing layer three or layer four, not layer one. A sleeve is the layer everyone buys first, and it is the layer that does the least for a collection sitting in a damp room on a sunlit shelf.
Start from the card, not the product
Two questions decide the whole stack, and neither is about which brand is best.
- Is the card raw or graded? A raw card takes a sleeve, and a rigid holder if it will be under load. A graded slab takes neither — it takes a bag for the case and a box sized for slabs.
- How thick is the card? That sets the PT rating on both the sleeve and any rigid holder. Getting this wrong is the single most common reason a sleeve does not fit. The way to work it out is in the sleeve thickness guide.
If you are protecting cards from more than one game, the good news is that this does not restart per game: the standard card is 63 × 88 mm across every line we index, so one size of sleeve covers them all. One set of sleeves fits every game we index sets out the exceptions worth knowing.
Guides for each layer
- Sleeve thickness, by use: 35 PT to 360 PT — what PT measures, and choosing by card rather than by habit.
- Storage boxes: what actually protects a collection — the layer that stops movement, and where boxes go wrong.
- Display frames and magnetic holders for graded cards — why display and protection pull in opposite directions.
- Does a graded slab need a sleeve? — what a slab bag protects (the case, not the card) and what does not fit.
- Humidity, light and long-term card storage — the four things that change a stored card, and what reversibility looks like.
- One set of sleeves fits every game we index — the 63 × 88 mm standard and the exceptions.
Where to look at what we stock
The full protection shelf — sleeves, rigid holders, binders, grading supplies and storage — is on the protectors shelf, which lists what is currently in stock.
- Soft sleeves — ultra clear, acid-free and PVC-free film in six thicknesses from 35 PT to 360 PT.
- Rigid 3" × 4" holders — hard holders with a double-sided protective film and anti-UV material, for cards stored or shipped under load.
- Graded PSA 10 cards — if what you came for is already graded rather than what to put it in.
What we do not sell, and why that is worth saying
We do not sell a product that protects a card from humidity, because no accessory does. Humidity and temperature are properties of the room, and the honest answer is that they are managed by where a collection lives rather than by something bought. Where a product has a real limit — a magnetic holder that is not sealed, a desiccant that saturates, a frame that is a display object rather than a barrier — our guides say so.
We also publish no price for the cards themselves in most of the lines we index, for reasons set out separately on each card line. Accessories are the opposite case: they are our own products, and every price and specification on those pages is ours to stand behind.
Frequently asked questions
What are card accessories and which ones do I actually need?
Card accessories are the layers that protect a card: a soft sleeve, a rigid holder, a storage box and, if a card is going on display, a display holder. A raw card needs a sleeve at minimum, and a rigid holder if it will be stored under load or shipped. Graded cards need a bag and a slab-sized box instead.
Do I need different accessories for different card games?
Usually not. The standard card in Pokémon, One Piece, Gundam, Dragon Ball and Magic: The Gathering is 63 × 88 mm, so the same sleeve size fits all of them. What changes between cards is thickness, which sets the PT rating of the sleeve you choose.
What is the most important layer of card protection?
It depends on what is threatening the card. For a card being handled, the sleeve matters most. For a card in storage, the box and the room matter more, because the damage there is slow and comes from moisture, light and movement rather than from fingers.
Can I just use one thick sleeve and skip the rest?
No, and thicker is not safer. A sleeve is rated for a card thickness, so going thicker leaves the card loose inside rather than better protected. A sleeve also does not stop pressure or moisture, which are the reasons the other layers exist.
Do graded cards need accessories too?
Yes, but different ones. A graded slab is already rigid and sealed, so it does not need a sleeve or a card holder. It can take a slab bag to protect the case surface and label, and it needs a box dimensioned for slabs rather than for raw cards.
Sources
Sources and further reading
- CardSpicy product specifications for the 100x penny sleeve range — PT ratings, inner dimensions, material and corner shapes. Retrieved 2026-10-06.
- CardSpicy product specification for the rigid 3" × 4" card holder range — holder dimensions, PT options, protective film and anti-UV material. Retrieved 2026-10-06.
- Published card dimensions from the card games indexed on this site, which share a standard size of 63 × 88 mm.
- General conservation guidance for paper-based collectables on humidity, light exposure, temperature cycling and contact materials as causes of slow, irreversible change.
Specifications and stock are quoted from our own product data at the date shown and are subject to change. This page is guidance on accessories, not a valuation of any card.