A special kind of reply envelope used in fundraising, money collection, charity donations, it has an inner pocket to hold cash or a check, and if printed, the envelope itself it can double as an order form. There's also a two-way version -- with a removable perforated piece the recipient inserts before mailing. 3 sizes available in white and colors, printed or plain.
The standard weight for envelopes, great for everyday business. Is the least expensive white paper, but isn't "cheap" looking. Brightness is 92