Case Logic BNB-48 48 Capacity CD/DVD Prosleeve Nylon Binder (Black) Expandable 48 capacity CD binder (refill packs of Case Logic's PSR-50 and PSR-100 sold separately) Patented polypropylene ProSleeves keep dirt away to prevent scratching of delicate CD surface Removable pages allow for convenient organization CD storage sleeves with patented writable strip make organizing your CDs easy (permanent markers work best) 5 universal binder holes allow CD sleeves to fit Case Logic's unique disc binders and standard ring binders