Protective mailing bags MAILmedia K20 Brown 370 x 480 mm — padded envelopes for shipping documents and small items

MAILmedia K20 Brown mailing bags sized 370 x 480 mm are padded envelopes designed for secure transport of documents, small goods and fragile items. The padded interior cushions contents against shocks, while the brown outer layer resists tearing and abrasion during postal and courier handling. These envelopes are intended for routine e‑commerce shipments, office mailings, returns and document protection where a balance of protection and low weight is required.

Advantages

The MAILmedia K20 padded envelopes combine lightweight construction with internal cushioning to reduce shipment weight and postage costs while providing impact protection. Their robust outer surface improves resistance to punctures and scuffs, and the self-sealing closure speeds up packing operations. The neutral brown finish conceals minor surface marks and suits a wide range of business uses. Consistent dimensions and uniform padding allow predictable fit for standard documents and small items.

Suitable for

• Shipping paper documents, contracts and certificates
• Sending small electronics, accessories and spare parts
• E‑commerce orders and product returns of compact items
• Mailing fragile small items that require moderate cushioning

Key specifications

• Exterior format: 370 x 480 mm
• Padded interior for shock absorption
• Brown outer surface with tear-resistant properties
• Self-sealing closure for secure and quick packing
• Lightweight construction to reduce postage costs

How to use

Place the item flat inside the padded envelope, ensuring any sharp edges are wrapped or protected to avoid puncturing the interior padding. Remove the protective strip from the self-sealing closure and press the adhesive flap firmly along the full length of the opening to secure the pack. For heavy or irregularly shaped items, add additional internal protection or choose an alternative packaging option. Clearly address the envelope and apply postage according to carrier requirements.

Usage recommendations

For best results, use these padded envelopes for documents and small goods up to the dimensions of the envelope with moderate weight and fragility. Avoid using them for very heavy items or those with sharp corners unless additional internal wrapping is applied. Store unused envelopes flat in a dry place to maintain adhesive performance and padding integrity.