Mailing bags MAILmedia B4 Brown — 250 pcs, size B4, brown

MAILmedia B4 Brown mailing bags come in a pack of 250 and are sized for B4-format documents and flat items. These lightweight brown envelopes are designed to protect contents during postal and courier transport while providing a consistent, space-saving solution for offices, e‑commerce sellers and bulk mailing tasks. The smooth exterior and uniform size help simplify automated sorting and stacking for efficient handling of large consignments.

Advantages

The MAILmedia B4 Brown mailing bags combine low weight with adequate tear resistance to reduce postage costs while maintaining a basic level of protection for papers and flat products. Their neutral brown colour masks printed addresses and labels well, and the peel-and-seal closure speeds up packing operations. Supplied in a quantity of 250, the set supports recurring dispatch needs without frequent reordering.

Suitable for

• Sending B4 documents, certificates and folded A3 sheets
• Dispatching flat retail items such as posters, prints and thin booklets
• High-volume mailings from offices or e‑commerce businesses
• Organising bulk consignments for courier pickup and postal services

Key specifications

• Quantity per pack: 250 pieces
• Size: B4 (suitable for B4-format documents and flat items)
• Colour: brown
• Closure type: peel-and-seal self-adhesive strip
• Material: lightweight protective paper/plastic composite (envelope material designed for mailing)
• Shape: flat mailing bag for documents and slim items

How to use

Insert the B4 document or flat item into the envelope, ensuring edges and corners are aligned to avoid bending. Remove the protective strip from the self-adhesive closure, press firmly along the seam to seal, and smooth the surface to secure the bond. Write or apply address labels on the exterior in a visible area and affix any necessary postage or shipping labels before dispatch.

Recommendations

For best results, avoid overfilling: maintain a slim profile to prevent stress on the closure and to fit automated processing. Use internal buffering (such as cardboard inserts) for fragile prints or items requiring extra rigidity. Store unopened packs flat in a dry environment to preserve adhesive performance and material integrity.