Will Double-Sleeved Cards Fit in a Binder?
Binder pockets are rated by cards per page, not thickness. A pocket sized for a single sleeved card often will not hold a double-sleeved one.
Binder pocket capacity is usually quoted as cards per page, not by thickness. A side-loading pocket sized for a single sleeved card will not reliably hold a double-sleeved card, and overstuffing pockets is a common cause of bent corners. Check whether a binder states a sleeved-card or double-sleeved-card fit.
Frequently Asked Questions
Card size is not universal. Pokémon cards are 63.5 × 88 mm and Magic: The Gathering cards 63 × 88 mm, both taking "standard" sleeves around 66 × 91 mm. Yu-Gi-Oh! cards are 59 × 86 mm and need Japanese-size sleeves around 62 × 89 mm. A Yu-Gi-Oh! card physically fits a standard sleeve but sits loose and shifts, which is why the sizes are sold separately.
They will physically fit, but a 59 × 86 mm Yu-Gi-Oh! card sits loose inside a sleeve built for a 63 × 88 mm card and shifts during handling. Japanese-size sleeves around 62 × 89 mm are sold specifically for this size.
A Pokémon card is 63.5 × 88 mm and takes a standard sleeve, commonly around 66 × 91 mm — the same class used for Magic: The Gathering.