Abstract: The recyclable single-sheet mailer is a single sheet of predominantly opaque paper stock having a front face, a rear face, top and bottom edges, and a transparent and seamless addressee window area defined thereon. All printed content is applied to the rear face of the mailer. The mailer has a plurality of transverse fold lines formed parallel to the top and bottom edges, dividing the sheet into a plurality of panels configurable as either a one-way mailer or as mailer with a business or courtesy reply envelope. Furthermore, a two-dimensional barcode containing addressee specific account information may be printed on the reply envelope to facilitate handling. Finally, addressee information, including bar-coded POSTNET data, may be printed in mirror image within the transparent window area, facilitating correct barcode scanning.

Abstract: An office chair having a waist supporter which is characterized in that a turning switch is installed on the back side of the chair's back-rest which is capable of adjusting said waist supporter by a user in the sitting position in order that the sitter who works for a long time in the office sitting in the chair can alleviate his fatigue by manually adjusting the waist supporter at his will.