Neenah Royal Cotton Fine Business Stationery 10 Envelope 4.12 X 9.5 Inches, 25 Count, Ivory (29725) Acid and lingin free for great quality that doesn't deteriorate Inkjet, laser, copier and offset guaranteed Envelopes to ensure that everything you mail makes a great impression Paper made with 30 percent recycled post-consumer fiber 25 Envelopes