Mailing Folding Bags MAILmedia E4 150 g/m² with 40 mm Flap

MAILmedia E4 folding mailing bags are made from 150 g/m² material and feature a 40 mm flap for secure closure. Designed to hold documents and flat items, these mailers fold flat for compact storage and provide tear-resistant protection during transit. The construction balances lightweight handling with durability, making these bags suitable for routine office mailings, e-commerce shipments of documents or slim products, and organized storage of paperwork.

Advantages

The 150 g/m² material offers a stable, tear-resistant surface that protects contents from bending and minor external damage. The 40 mm flap provides sufficient overlap for reliable closure and tamper resistance when sealed. Folding design enables space-saving storage and reduces mailing volume. The neutral surface is compatible with standard labeling and postage printing methods, allowing easy addressing and barcoding without special preparation.

Suitable for

• Shipping documents, contracts, certificates
• Mailing thin books, magazines and brochures
• Sending slim textile items such as handkerchiefs or samples
• Organized internal document transfers and archive storage
• E-commerce orders of flat or low-profile goods

Key specifications

• Material weight: 150 g/m² for enhanced stiffness and tear resistance
• Flap width: 40 mm to enable secure closure
• Construction: folding design for compact shipping and storage
• Surface: printable and label-friendly for addressing and postage
• Intended content: flat items, documents and slim products

How to use

Place the document or flat item inside the bag, ensuring edges lie flat to avoid bulging. Fold the bag as required and align the 40 mm flap over the opening; apply adhesive tape or an appropriate seal to achieve a secure closure. Affix address labels, postage stamps, or printed shipping information directly to the surface. For multiple items, check that total thickness remains within postal service limits and that contents do not overfill the bag.

Usage recommendations

For best results, use a strong adhesive or tamper-evident tape to secure the flap for courier or registered deliveries. When shipping fragile or high-value items, combine the bag with additional internal protective layers such as cardboard or bubble wrap to prevent bending and impact damage. Store unused bags flat in a dry environment to preserve material integrity and ensure consistent folding performance.