Disclosed is a reusable flat envelope bag, such as a flat mail envelope, which comprises an envelope body defining a pouch, the envelope body having an opening at one end or one side to access the pouch, at least one wrist strap attachable to the envelope body by which wrist strap the envelope can be reused as a bag or wristlet. The reusable flat envelope bag may optionally include one or more handles.

A multi-layer film includes a first-seal layer and a second-seal layer. The multi-layer film may be used to form a package for consumer-care products.

A reusable mailer bag includes a front panel, a rear panel, a pair of side panels, and a bottom panel. The panels together define a carrying volume including an opening opposite the bottom panel. A pair of handles are attached to an interior surface of the carrying volume and are configured for positioning entirely within the carrying volume during shipping. The pair of handles are configured to extend out of the opening to convert the reusable mailer bag for use as a carrying bag. A flap is attached to the rear panel at a first end and is configured to extend across the opening to close the opening. The flap is securable to the front panel at a second end by an adhesive strip. The flap is configured to be removed from the mailer bag after shipping.

The present invention provides reusable envelope structures and methods of use thereof. In preferred aspects, the present invention provides envelope structures in which a single envelope structure can provide multiple uses.

A protective means has a pouch-like structure, comprising an orifice for inserting X-ray imaging media in the protective means. In connection with the protective means there is also a closing means, which is arranged to close the orifice. Also in connection with the protective means there is a fastening means for fastening a closing means to the pouch-like structure of the protective means so that upon fastening the closing means the fastening means is arranged to be located on both sides of the orifice.