Square Card Sleeves 70x70mm: Which Games Fit?
By Greater than Games | Published: 2026-10-31
Category: How-to Guides
Learn how to measure your cards and decide whether 70x70mm square sleeves fit your board game. Includes a step-by-step fit check and common mistakes to avoid.
Quick answer
70x70mm square sleeves fit cards that measure exactly 70mm by 70mm or slightly smaller, such as the 55 cards in Compounded: The Peer-Reviewed Edition. Measure your cards first; if they are larger than 70mm in either direction, these sleeves will not fit.
Why square sleeves are different from standard sleeves
Most card sleeves are rectangular, with a shorter side and a longer side. Square sleeves like the 70x70mm size have equal sides, so they only work with square cards. Standard poker-sized cards (63.5x88mm) will not fit because the 88mm height exceeds the 70mm sleeve opening.
Square cards appear in some board games for tiles, tokens, or special decks. Always check the card dimensions in the rulebook or measure them yourself before buying sleeves.
How sleeve thickness affects fit
Sleeve thickness is not listed for the Square Size Card Sleeves (70x70mm), so you cannot compare it by micron count. Thicker sleeves generally add more bulk and may make stacks taller, but without a stated thickness, judge fit by the listed dimensions only.
If you need a specific thickness for shuffling or stacking, look for sleeves that state their micron rating. For this product, the key specification is the 70x70mm size and the acid-free, PVC-free material.
Step-by-step: check if 70x70mm sleeves fit your cards
- Measure one card from your game: Use a ruler or caliper to measure the width and height of a single card in millimeters. Measure at the edges, not the center, because cards can be slightly warped. Common mistake: measuring a card that is still in a stack or has a protective coating. Measure a clean, flat card.
- Compare your measurements to 70x70mm: The sleeve opening is 70x70mm. Your card must be 70mm or smaller in both dimensions to fit inside. If either dimension is larger than 70mm, the card will not fit. Checkpoint: if your card is exactly 70mm, it will be a tight fit; allow for slight variation.
- Account for card thickness and sleeve material: The sleeve thickness is not specified, so you cannot predict how much bulk it adds. Insert one card into a sleeve and check that it slides in without bending. If the card bows or the sleeve seams strain, the fit is too tight. Common mistake: forcing a card into a sleeve can damage corners. Stop if you meet resistance.
- Test a full deck for stacking and shuffling: Sleeve a representative sample of your deck (at least 10 cards) and stack them. Check that the stack remains stable and that shuffling feels comfortable. Square sleeves can make shuffling different from rectangular sleeves. Checkpoint: if the stack becomes unstable or too tall for your storage, consider whether you need sleeves at all.
- Confirm the sleeve count matches your needs: The pack contains 50 sleeves. Count the number of cards you plan to sleeve. If you have more than 50 cards, you will need multiple packs. For Compounded: The Peer-Reviewed Edition (55 cards), one pack covers most but not all cards. Common mistake: forgetting to account for extra cards or replacements. Buy enough packs for your full deck plus spares.
Product facts
- Square Size Card Sleeves (70x70mm): 50 clear, square-sized (70x70mm) card sleeves made from acid-free and PVC-free plastic. The acid-free, PVC-free material helps preserve cards over time, and the 50-count pack suits small decks or specific games like Compounded: The Peer-Reviewed Edition (55 cards).
Square Size Card Sleeves (70x70mm)
