Suede Collection Zippered 4-Pocket Premium PRO-Binder- Emerald - Rules of Play says:

Zippered PRO-Binder with embossed middle black web material to give cards a classic framed look. Made of premium suede material. Side loading pocket design to prevent cards from easily falling out. Zipper holds the binder shut when not in use. All materials made from archival-safe, acid-free non-PVC material. Holds 160 cards in Ultra Pro Deck Protector sleeves.