Mailing bags MAILmedia Sumo Type G Brown 225 x 340 mm – padded postal bag

MAILmedia Sumo Type G Brown 225 x 340 mm padded postal bag is a brown mailing bag designed to protect small to medium flat items during transport. The bag features an internal cushioning layer and a secure self-adhesive closure to keep contents stable and protected from shocks and light bending. Sized at 225 x 340 mm, it is intended for lightweight goods such as documents, thin books, CDs, small electronics and similar flat items used in e‑commerce, returns handling and postal deliveries.

Advantages

The padded construction combines a lightweight exterior with internal cushioning to reduce impact and scuffing while keeping postage costs low due to minimal bulk. A peel-and-seal adhesive strip provides a reliable closure that simplifies packing and helps ensure tamper-evident delivery. The neutral brown exterior is discreet and suitable for business and consumer shipments, and the bag’s dimensions accommodate common flat items without unnecessary excess material.

Suitable for

• Shipping documents, letters and invoices
• Sending thin books, magazines or booklets
• Delivery of small flat electronics such as phone accessories or memory cards
• E‑commerce orders and customer returns

Key specifications

• Outer colour: brown
• Internal padding: cushioned lining for impact protection
• Closure type: self-adhesive peel-and-seal strip
• External material: lightweight envelope film
• Intended size for contents: fits items up to approximately 225 x 340 mm
• Typical use: postal and courier shipments of flat items

How to use

Insert the item flat into the bag, ensuring it lies flush against the cushioning lining. Peel off the protective strip from the adhesive area and press the flap firmly to seal the bag along the full width of the adhesive strip. For heavier or fragile items, add additional internal protection or place the padded bag inside a carton for secondary protection. Write or attach the shipping label on the exterior surface in a clearly visible position.

Usage recommendations

For best results, use the MAILmedia Sumo Type G padded bag for single flat items or small sets of items that do not exceed the bag dimensions. Avoid overfilling beyond the intended size to maintain the integrity of the adhesive closure and cushioning. Store bags flat in a dry environment away from direct sunlight to preserve adhesive performance and material strength.