Mailing bag MAILmedia C4 388320 self-adhesive with window, white

MAILmedia C4 mailing bag model 388320 is a white self-adhesive envelope with a transparent address window designed for sending documents and flat items in C4 format. The mailer is sized to accommodate unfolded A4 papers, brochures and similar materials while providing a sealed protective layer during transit. The integrated transparent window lets recipient details remain visible without additional labels, and the self-adhesive closure enables a fast and secure seal.

Advantages

The MAILmedia C4 mailing bag offers a combination of convenience and protection: a ready-to-use self-adhesive flap for quick sealing, a clear address window to display recipient information, and a smooth white exterior that is suitable for printing or labeling. The construction reduces the need for extra tape or glue and helps keep contents flat and protected from light handling and dust. The product is lightweight for postal cost efficiency while maintaining adequate durability for standard mail and parcel services.

Suitable for

• Sending invoices, contracts and certificates in C4/A4 format
• E‑commerce shipments of documents, brochures and thin catalogues
• Office mailing and interdepartmental document transfers
• Postal dispatches where recipient address visibility is required

Key specifications

• Format compatibility: C4 (suitable for unfolded A4 documents)
• Closure type: self-adhesive strip for quick sealing
• Window: transparent address window for visible recipient details
• Color: white exterior
• Material: flexible protective envelope designed for mailing

How to use

Insert the unfolded A4 or C4-size content into the mailing bag with the recipient details aligned to the transparent window. Peel off the protective liner from the self-adhesive strip and press the flap firmly to seal the envelope. Check that the document sits flat and the window clearly shows the address before dispatch. For additional security, affix a shipping label or hand over to your postal carrier according to local postal requirements.

Recommendations

Store the mailing bags flat in a dry place away from direct sunlight to preserve adhesive performance and window clarity. Use within the intended size range (C4/A4) and avoid overfilling to ensure a secure seal and maintain transit protection.