Folding shipping bags MAILmedia C4 Brown 100 pcs Self-adhesive

Folding shipping bags MAILmedia C4 Brown 100 pcs Self-adhesive are packable, lightweight envelopes designed to hold flat documents and items that fit C4 dimensions. The brown kraft material provides a protective layer against dirt and light moisture while keeping contents flat and secure. A self-adhesive closure allows fast sealing without additional tape, and the foldable construction reduces storage volume until the moment of use.

Advantages

The self-adhesive strip ensures quick and reliable closure, speeding up packing workflows. The foldable design minimizes shelf space requirements and allows transporting larger quantities in a compact form. The brown kraft exterior is durable for routine postal handling and offers a neutral appearance suitable for business correspondence and e‑commerce shipments. Lightweight construction contributes to lower postage costs compared with rigid packaging.

Suitable for

• Mailing flat documents, brochures and catalogs
• Shipping printed photos, certificates and thin promotional materials
• Office mailing and invoicing envelopes
• E‑commerce shipments of flat, non-fragile goods
• Postal services and courier dispatches

Key specifications

• Format compatibility: C4 (designed to accommodate C4-size documents)
• Color: brown kraft
• Closure type: self-adhesive strip for fast sealing
• Quantity: 100 pieces per pack
• Construction: foldable, flat-packed for compact storage
• Material properties: lightweight kraft paper offering basic protection from dirt and light moisture

How to use

Insert the documents or flat items aligned with the envelope edges to avoid creasing. Fold the envelope into its final shape following the pre-scored lines, then remove the protective liner from the self-adhesive strip and press firmly to seal. For heavier contents, ensure items lie flat and close the flap evenly to maintain the envelope shape during transit. No additional tape is required for standard mailing.

Recommendations

Use these folding shipping bags for non-fragile, flat items and avoid packing bulky or heavy objects that could puncture or deform the envelope. For added protection of sensitive contents, combine with internal protective sleeves or cardboard stiffeners. Store unpacked envelopes flat in a dry environment to preserve adhesive performance and material integrity.