Ultimate Guard's Arkhive 400+ Xenoskin with officially licensed artwork from "Magic: The Gathering | Teenage Mutant Ninja Turtles" is the perfect MTG mass storage box for storing and carrying multiple deck boxes and/or a large number of single cards. The Arkhive's lid is secured with a strong magnetic closure. In addition, the durable Xenoskin material and microfiber inner lining ensure excellent protection for up to 450 double-sleeved cards in Ultimate Guard sleeves* or four Boulder 100+ deck boxes.