Monster Protector Sleeves in Standard Size Super Matte finish are compatible with MTG Magic the Gathering and Other Standard Sized Gaming, Trading, Sports and Collectible Cards. From the best name out there, Monster sleeves will change the way you think of gaming protection. High quality, durable construction and Monster branded. This is the only brand you will ever need. Standard size are compatible with Magic the Gathering and other larger sized cards and Smaller Size is compatible with Yugioh and other smaller trading cards.