Shipping bags MAILmedia 391080 B4 250 x 353 mm self-adhesive white-blue

MAILmedia Shipping Bags 391080 B4 250 x 353 mm self-adhesive white-blue are lightweight mailing bags sized to fit B4 documents and flat items. The bags have a uniform outer surface suitable for handwritten addresses, labels or machine printing, and an integrated adhesive strip for quick and secure sealing. Designed for office, e‑commerce and postal use, these shipping bags offer basic protection against dust and light moisture while reducing shipping weight compared with boxes.

Advantages

The self-adhesive closure enables fast, tamper-evident sealing without tape or additional tools. A smooth outer face ensures clear printing and easy application of labels. The compact B4 dimensions provide a snug fit for A4 documents folded once or other flat items, minimizing movement inside the bag. The white-blue color combination offers a neutral appearance suitable for business correspondence and retail shipments.

Suitable for

• Sending A4 documents folded once, brochures, catalogs and certificates
• E‑commerce shipments of flat textiles, small soft goods and media (CDs, thin books)
• Office and administrative mailings that require lightweight, printable packaging
• Postal dispatches where weight reduction and easy sealing are priorities

Key specifications

• Size: B4 format, 250 x 353 mm
• Type: self-adhesive mailing bag with peel-and-seal strip
• Color: white outer surface with blue interior or accents
• Surface: smooth, printable exterior suited for labels and thermal or inkjet printing
• Construction: flexible, lightweight film material providing dust and light moisture resistance

How to use

Place the document or flat item centrally inside the bag to avoid corner protrusion. Remove the protective strip from the adhesive closure and press the flap firmly along the entire sealing edge to ensure a secure bond. For additional tamper evidence or reinforcement during transit, consider applying a label or sealing tape over the flap. When printing addresses directly on the bag, allow ink to dry fully before handling to prevent smudging.

Usage recommendations

Use these mailing bags for shipments where light protection and low weight are essential. Avoid overfilling beyond the intended dimensions to prevent seal failure. For items requiring higher mechanical protection or waterproofing, select padded or poly-lined alternatives.