OEM Southworth No. 10 envelopes designed to capture the rich texture and feel of natural linen. Made with 25 percent cotton fiber, these 24 lb. envelopes are perfect for letterheads, reports, and presentations that require a distinctive look. They are watermarked, acid-free, and compatible with both laser and inkjet printers. Additionally, these envelopes are produced with a high percentage of recycled material.