Mailing bag MAILmedia K-Pack B5 360 g/m² White – padded postal envelope B5 size

MAILmedia K-Pack B5 360 g/m² White is a padded postal envelope in B5 format designed for the secure shipping of documents, small books and other flat items. Constructed from a 360 g/m² material with integrated cushioning, the mailing bag combines a slim profile with protective padding to reduce the risk of minor impacts, bending and surface abrasion during transport.

Advantages

The padded design provides an extra layer of protection compared with standard paper envelopes while keeping overall weight low for economical postage. The B5 format fits common document sizes and smaller publications without the need for folding. The white finish offers a neutral appearance suitable for business and retail use, and the envelope’s construction simplifies packing and handling in e‑commerce and office environments.

Suitable for

• Shipping flat documents, brochures and certificates
• Mailing small books, notebooks and catalogs
• E‑commerce shipments of thin or fragile flat goods
• Office and retail order fulfilment where light cushioning is sufficient

Key specifications

• Format: B5 suitable for common B5 paper and similarly sized items
• Material weight: 360 g/m² providing medium durability and stiffness
• Finish: white outer surface for a neutral, professional look
• Padded construction: integrated cushioning layer to protect against minor impacts and abrasion
• Profile: slim padded envelope designed for flat items rather than bulky goods

How to use

Insert contents flat into the envelope, ensuring they lie evenly against the padding. Seal the closure according to the envelope’s fastening system and confirm the seam is secure before applying postage. For added protection of corners and edges, consider wrapping fragile items in an additional protective sleeve or thin cardboard insert prior to placing them in the padded bag.

Recommendations

Use this padded mailing bag when shipping documents and flat items that require light to moderate protection. Avoid using it for heavy or bulky products that exceed the envelope’s intended load, and pair with additional internal reinforcement if sending particularly delicate goods or when higher impact resistance is needed.