BestDuplicator White Cd/Dvd Paper Media Sleeves Envelopes with Flap and Clear Window (400 Sleeves) White Paper storage envelopes, Protects from static and debris Holds CD in much less space than standard jewel case. Clear Polypropylene window for easy identification. These sleeves are also moisture and tear-resistant. Sleeve size approx. 5" x 5" plastic window is 4" in diameter.