Today, they are sold all over the world under the HAGNER brand name. Hagner stock sheets are comprised of Neutral ph card stock, Mylar film and a chemically inert, permanently elastic synthetic glue which will not harm stamps.

In the more than 40 years since since Bo Hagners invented the stock sheets they have been constantly improved. Today they are distinguished for their unsurpassed quality, ease of use and perfect protection for stamps. Long term tests under extreme conditions have shown Hagner stock sheets will retain their valuable properties over centuries. Collectors and Postal Administrations worldwide rely on Hagner stock sheets for the safe long-term storage and display of stamps.