A:Answer I don't know the measurements exactly ,I bought these to put Pokemon cards in and they don't fit ,but barely. Pokemon cards are the standard card size of 2.5 x 3.5 ,so I am guessing the width is slightly smaller probably 2.5 x 3.4.Only Yugi-Oh cards will fit in these, but now that makes sense because Yugi-Oh cards are smaller in size compared to other trading cards.I wish I had knew that before I bought them.Other than not fitting , they are cool looking quality sleeves.
