Ultimate Guard's Katana line sits a step up in build quality - a thicker, more rigid sleeve that holds its shape better over long play sessions and repeated shuffling than a standard budget sleeve. If you're sleeving a deck you play often rather than one that mostly sits in a binder, the extra durability shows up over months of use rather than in the first few games. 100-count, standard size (63.5x88.9mm).
Need the small-format version for Yu-Gi-Oh! or similar games? See Katana Sleeves - Japanese Size.