Mailing bags MAILmedia B12 Brown 12 g, size 140×225 mm, lightweight postal envelopes

MAILmedia B12 Brown 12 g mailing bags are lightweight postal envelopes sized 140×225 mm, designed for sending documents and small items. These brown envelopes combine a slim profile with tear-resistant material to reduce postage costs and facilitate handling in e-commerce, correspondence and returns. Their compact dimensions make them suitable for single documents or small, flat products while optimizing storage and transport space.

Advantages

The envelopes are lightweight at 12 g, which helps lower shipping costs for low-weight items. Constructed from a tear-resistant paper, they protect contents from minor mechanical damage during transit while remaining easy to write on for addressing and labelling. Their brown colour conceals minor scuffs and provides a neutral, professional appearance for business mailings. The slim format and consistent size simplify automated or manual sorting and stacking.

Suitable for

• Shipping single documents, invoices, certificates and letters
• Sending small, flat items such as cards, stickers or thin textiles
• E-commerce order packing for low-weight products
• Returns and correspondence handling

Key specifications

• Material: lightweight, tear-resistant paper
• Weight: approximately 12 g per envelope
• External dimensions: 140×225 mm
• Colour: brown
• Closure type: self-adhesive strip or flap (standard for mailing bags)

How to use

Insert the document or flat item so it lies evenly within the envelope without overfilling beyond the edges. If necessary, fold contents to fit within the 140×225 mm area while avoiding sharp folds that could damage the item. Seal the envelope using the self-adhesive strip, pressing firmly along the flap to ensure a secure closure. Write the recipient address and return address clearly on the outer surface or attach a printed label.

Usage recommendations

For best results, use these mailing bags for items that remain flat and lightweight; combine with additional inner protective wrapping for delicate goods. Avoid exceeding recommended weight limits for standard letter postage to keep shipping economical. Store envelopes in a dry environment to preserve adhesion and material strength.