Ultimate Guard Arkhive 800+Ultimate Guard Arkhive 800+ Double the capacity, double the organization. The Arkhive 800+ holds up to 900 double sleeved cards across two rows, or up to eight Boulder 100+ deck boxes. Packed with the same premium features as the Arkhive 400+ Xenoskin exterior, microfiber inner lining, and a strong magnetic ZnapClaw closure this is the go to storage solution for serious collectors and players with large collections.