The third part of Ultimate Guard's “Katana: The Shogun's Journey” series includes four Boulder 100+ deck boxes along with a matching Arkhive 400+ mass storage box. The four Boulders — in the designs Soushin (Blue), Kousei (Red), Kouyo (Brown), and Suirei (Green) — fit perfectly into the breathtaking Arkhive 400+. Inspired by traditional Japanese wood art, it is crafted from resistant Xenoskin material, features an elegant microfiber inner lining, and is secured with a strong magnetic closure.