Larger decks or custom sizes require a larger box or tougher packaging for especially high-end or collectible cards
I would usually use the Dragon Type to double-check: since I somehow learned that Dragon-type Pokmon are weak to Ice-type moves (probably from the internet), and since nothing else beats the Dragon Type (except itself), and since the Dragon Type is conveniently at the very end of the chart, it would be the easiest column for me to read at a glance, and I could then use that knowledge to orient myself
however, prepare for some promos
If you are searching for the best MTG sleeves, the answer is 90 micron
Immerwolf, Moonmist, Full Moon's Rise, and several others are not included here for reasons already stated, but I still felt they needed to be specifically mentioned

ready-to-play right out of the box, these preconstructed decks let you jump straight into the action MUTANT MENACEChoose the Mutant Menace deck to place your belief in The Wise Mothman and prove that humanitys time at the top of the food chain is over COLLECT SPECIAL FALLOUT CARD TREATMENTSEach deck comes with a Collector Booster Sample pack containing 2 special alt-frame cards, including 1 Rare or Mythic Rare card EVERYTHING YOU NEED TO PLAY AND MOREEach deck also comes with 10 double-sided tokens, 1 life tracker, 1 strategy guide, and 1 deck box (can hold 100 sleeved cards) A GAME THAT FUSES ART, STORIES & STRATEGYMagic: The Gathering is a collectible card game that weaves deep strategy with art and mechanics that explore the themes of a particular world and storywhether you want to play a casual game with friends, collect cool cards, or get competitive, Magic welcomes you to The Gathering