Doing riffle shuffles, they can be hard to the cards pushed together (particularly at the very bottom of the deck) without leaving a few behind, as opposed to sitting atop of an already felted or padded table - there just inst enough deflection of the topper to allow your fingers to get under all the cards. And yes also sometimes when squeezing. Again, this isn't really to do with the thickness of the topper, as the thicker toppers have the same density and when trying to push into it on top of a hard unflexing surface, it can be a pain. The liner I'm taking about is maybe 1/16 or slightly thicker. But its waffle pattern design and buffering between the mat and the table top allows it to function as if it is sitting on top of a padded poker table.