Life Is Noteworthy. Southworth Business envelopes are an easy replacement of everyday business-size envelopes, with distinctive finish and premium paper. The envelopes have a rich linen paper texture and distinctive crispness that set it apart from ordinary stationery. You can send or present noteworthy correspondence, letterhead, awards, certificates and much more. These acid-free paper envelopes are copier, inkjet, and laser printer-compatible. Southworth Linen Envelopes can make your best ideas really shine.