Ultimate Guard Slim 3R Binder Xenoskin Card Sleeves, Black Heavy-duty d-rings: robust and durable d-rings for keeping the pages safely in place, even when the album is heavily loaded Reinforced hinges: high-quality mechanics for quick and an easy addition or removal of pages High quality inner lining: premium microfiber fabric, soft to the touch Xenoskin(tm) texture: innovative cover material with anti-slip texture Holds 16 pages with doubled-sleeved cards, 22 pages with single-sleeved cards or 32 pages with unsleeved cards