I put them in this in card # order with the "locked" cards face down and the "unlocked" cards face up. https://www.amazon.com/Flexxfolio-American-Pocket-Sleeves-Black/dp/B019GQ9EPA/ref=sr_1_2?s=toys-and-games&ie=UTF8&qid=1526947950&sr=1-2&keywords=ultimate+guard+american+mini&refinements=p_89%3AUltimate+Guard

There is an alternative Zipfolio version as well, but it is too expensive where I live.