Printed 5 x 8 Self-Sealing Cellophane Bags. Self-sealing cello bags that are flat like an envelope and most have colorful printed designs with a clear background. We also carry clear flat cello bags in many sizes. The following will fit the 5x8 flat cellophane bag: Mary Kay® Beauty Book, Passion Parties® Brochure , PartyLite® Summer Mini Catalog (folded like a business letter). Make up hostess packets ahead of time and place them in your tote from My Girlfriend's House for a professional and fun appearance at your shows and meetings.