Mailing folding bags MAILmedia C4 Brown with adhesive strip, size C4, kraft paper

MAILmedia C4 Brown folding mailing bags with adhesive strip are C4-sized kraft paper envelopes designed to carry documents, brochures and other flat items. The foldable construction allows compact storage and quick assembly, while the self-adhesive closure secures the contents for postal handling. The natural brown kraft finish provides a neutral, recyclable option for business and private mailings.

Advantages

The kraft paper material offers good tear resistance for standard postal use and is lightweight to help reduce postage costs. The integrated adhesive strip provides a reliable seal without the need for separate tape or glue. Foldable design reduces warehouse volume and makes it easy to prepare shipments. The plain brown surface is suitable for printing or labeling and is recyclable where kraft paper collection is available.

Suitable for

• Sending A4 documents folded once or flat if using C4 format
• Mailing brochures, catalogs and printed materials
• Small, flat retail items that fit C4 dimensions
• Business correspondence and invoice mailing

Key specifications

• Format: C4 (suitable for A4 flat or folded documents)
• Material: kraft paper
• Closure: self-adhesive strip
• Color: brown (natural kraft)
• Construction: folding/flat-pack design for space-saving storage

How to use

Insert the document or flat item into the open bag, ensuring edges align with the opening. Fold the flap along the pre-creased line and remove the protective liner from the adhesive strip. Press the flap firmly to the body of the bag to create a secure seal. For heavier items or extra protection, reinforce the closure with tape or use additional cushioning inside the bag as needed.

Usage recommendations

Store the folding mailing bags in a dry place to prevent weakening of the kraft paper. When sending important documents, consider using a clear address label and adding a packing slip inside. Avoid overfilling beyond the recommended flat capacity to maintain seal integrity during transit.