This medium-large kraft bubble mailer size is designed for those packing moderately thick products up to B5 format. The outer kraft paper is strong, easy to write on and has a rustic look; the inner HDPE bubble lining absorbs shocks during handling. This 50-piece pack is ideal for webshop owners who want to order a larger quantity at a wider size range.
What is included in the 50-piece pack
The pack contains 50 kraft bubble mailers, each with an outer dimension of 195×275 mm and an additional 40 mm closure flap. The total weight is approximately 1.65 kg, and a single mailer weighs around 30 grams. The mailers arrive in a flat bundle, so they are easy to store on a shelf or in a larger box.
Material and bubble lining
The outer kraft paper is durable, tear-resistant by hand, with a classic brown tone. It is specifically resistant to creasing, tearing and minor scratching during postal transit. Inside, an HDPE-based bubble lining protects the contents from shocks and vibrations through evenly distributed air cells. The kraft exterior and HDPE interior combine for reliable two-layer protection in everyday postal traffic.
Size and use
The 195×275 mm outer dimension already accommodates B5 format (176×250 mm) and most documents above A5 but below A4. It fits a smaller hardcover book, a thin calendar, a thicker folder, a medium clothing item (a T-shirt, a shirt collar, a bundled sock set), a medium cosmetic product or 2-3 flat creative supplies. For webshops handling mixed-size items this is a very versatile size.
Closure and opening
The +40 mm flap has a self-adhesive strip on its inner side. After removing the protective tape, the flap closes in a single motion and provides a durable, tamper-evident seal. The recipient opens the envelope along the flap with a tearing motion. The seal is single-use: once opened, it does not provide sufficient security for onward postal shipping.
Storage and durability
Store the mailers as a flat bundle in a dry, cool location, away from direct sunlight. Humid environments, prolonged sun exposure or high temperatures gradually weaken the adhesive strip. With proper storage the 50-piece bundle retains its quality for many months.