Protection Guide

MTG Card Protection Guide

Everything you need to know about protecting your Magic: The Gathering cards. From draft pulls to Reserved List staples.

Magic: The Gathering cards span over 30 years of printing. A Beta Black Lotus can sell for six figures, while modern chase cards like serialised cards and Collector Booster exclusives command serious premiums. Whether you're protecting a draft pull or a Reserved List investment, the right storage matters.

Why It Matters

Why MTG Cards Need Protection

MTG cards are printed on a specific cardstock with a blue core layer — this is actually used to authenticate genuine cards. The surface treatments vary enormously: standard cards, foils, etched foils, textured cards, and borderless art variants all have different vulnerability profiles.

Foil MTG cards are particularly prone to curling (known as 'Pringles' in the community) when exposed to humidity changes. Extended art and borderless cards, where the art extends to the very edge, are more vulnerable to edge wear because there's no border to absorb minor contact damage.

The MTG secondary market is one of the most established in all TCGs. Reserved List cards only appreciate, and Commander staples hold value for years. Proper protection from day one is an investment in your collection's long-term worth.

Magic: The Gathering Card Dimensions & Toploader Fit

63mm (2.5") x 88mm (3.5")

Standard card size

89mm x 127mm

Oversized / Jumbo cards

All standard MTG cards are the same size regardless of set, rarity, or treatment. This includes foils, extended art, borderless, showcase, and serialised variants.

Oversized Commander cards (sometimes included as promos). These require larger holders and are not compatible with standard toploaders.

Standard 35pt toploaders (3" x 4") fit all regular MTG cards. DeckSentry 35pt toploaders provide a precise fit that prevents excess movement without being too tight for foils.

Protection Levels

Protection Tiers by Card Value

Essential

Under £5

Draft chaff, playable commons/uncommons, and bulk rares.

1.Penny sleeve for any card you want to keep in good condition
2.Toploader for anything with trade value
3.Store in a cool, dry place

Collector

£5 – £50

Popular Commander staples, foil rares, showcase variants, and playable mythics.

1.Perfect-fit inner sleeve for a snug hold
2.DeckSentry acid-free toploader for rigid protection
3.Store upright in a toploader box
4.Avoid humidity extremes (especially for foils)

Investment

£50+

Reserved List cards, serialised cards, high-value foils, and vintage staples.

1.Handle by edges only with clean, dry hands
2.Perfect-fit inner sleeve immediately
3.DeckSentry acid-free toploader
4.Consider double-sleeving inside the toploader for maximum protection
5.Store in a climate-controlled environment — humidity control is critical for foils

Step-by-Step: How to Store Magic: The Gathering Cards

Separate valuable pulls immediately

During drafts or pack openings, set aside anything with value. Don't shuffle it into your draft pile.

Sleeve the card

Use a penny sleeve for standard cards or a perfect-fit inner sleeve for valuable cards. Slide in from the top — never force a card.

Insert into toploader

Place the sleeved card into a DeckSentry 35pt toploader. For foils, this also prevents curling.

Store in a controlled environment

Upright in a toploader box or binder, in a room with stable temperature and humidity. Keep away from direct light.

Avoid These

Common Magic: The Gathering Card Protection Mistakes

Ignoring foil curl and humidity

MTG foils absorb moisture and curl (the 'Pringle' effect). This can cause permanent bending and makes cards ungradeworthy.

Store foils in toploaders immediately — the rigid structure prevents curling. Use silica gel packets in your storage area to control humidity.

Storing cards in a garage or attic

Temperature and humidity fluctuations in uncontrolled environments cause warping, foxing (brown spots), and accelerated degradation.

Store cards in a room with stable temperature (18–22°C) and moderate humidity (40–50%).

Using deck boxes for long-term storage

Deck boxes are designed for transport, not preservation. Cards inside shift, rub, and can develop edge wear over time.

For long-term storage, individual toploaders or binder pages are far superior to loose deck box storage.

Placing toploaders in direct light for display

Even indoor lighting can cause gradual fading on foil and art cards over months and years.

Use acid-free toploaders for any cards on permanent display and position them away from direct sunlight. DeckSentry toploaders are acid-free with crystal-clear clarity, ideal for display in low-light environments.

Protect Your Magic: The Gathering Cards with DeckSentry

Acid-free, precision-engineered, crystal-clear toploaders. Built for collectors who take their Magic: The Gathering collection seriously.

Acid-Free|Precision Fit|99.9% Clarity

Shop DeckSentry Toploaders

Frequently Asked Questions

What size toploader fits MTG cards?

Standard 35pt toploaders (3" x 4") fit all regular MTG cards, including foils, extended art, borderless, and showcase variants. DeckSentry 35pt toploaders are precision-engineered for this standard TCG card size.

How do I stop MTG foils from curling?

Place foil cards in a rigid toploader as soon as possible — the rigid structure physically prevents curling. For storage, control humidity with silica gel packets and store in a stable-temperature room. DeckSentry toploaders keep foils flat and protected.

Should I double-sleeve cards in toploaders?

For high-value cards, yes. A perfect-fit inner sleeve plus the toploader provides two layers of protection. The inner sleeve prevents surface scratches, while the toploader provides rigidity and acid-free archival protection. DeckSentry toploaders offer crystal-clear clarity so you can appreciate the artwork fully.

Are DeckSentry toploaders compatible with PSA submissions?

DeckSentry toploaders keep your cards in perfect condition before submission. For the actual submission, PSA prefers Card Savers (semi-rigid holders). Store in DeckSentry toploaders, then transfer to Card Savers when you're ready to submit.

How should I protect Reserved List MTG cards?

Reserved List cards like Dual Lands and Power Nine should get maximum protection: perfect-fit inner sleeve, DeckSentry acid-free toploader, stored in a climate-controlled environment away from all light. These cards only go up in value — protect them accordingly.

Do toploaders prevent UV fading on MTG cards?

Standard toploaders do not filter UV light, and DeckSentry toploaders do not contain UV inhibitors either. To prevent the colour fading that UV causes on displayed foils and art cards, store them away from direct sunlight and strong artificial light. DeckSentry toploaders are acid-free with crystal-clear clarity, protecting against acid-related yellowing while letting you appreciate the artwork fully.