Each pack of sleeves includes 50 sleeves.
All sleeves in the Fantasy Flight Supply board game sleeve line are made of clear, 100 micron-thick, non-PVC, acid-free polypropylene plastic. This means that the sleeves are durable, difficult to tear or crease, and are free of chemicals that will corrode the cards within the sleeves. The sleeves are also designed to fit cards snugly, to make shuffling and handling easy.
Examples of games with cards that this sleeve will fit: Citadels, Munchkin, Descent: Journeys in the Dark, War of the Ring, Bohnanza
"I've tried a few different brands for non-standard size sleeves. I've found these to be a good balance between durability and cost. I pretty much but these exclusively for that purpose now unless they don't offer the size I need."