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Bottom Gusset Kraft Bubble Mailer, custom printed padded shipping envelope
Expandable bottom gusset bubble mailer, expand kraft shipping bag
Bottom gusset bubble mailer inner bubble and self‑adhesive strip detail
Bottom Gusset Kraft Bubble Mailer, custom printed padded shipping envelope
Expandable bottom gusset bubble mailer, expand kraft shipping bag
Bottom gusset bubble mailer inner bubble and self‑adhesive strip detail

Bottom Gusset Bubble Mailer

The bottom gusset bubble mailer features an expandable gusseted bottom that unfolds to accommodate thicker, bulkier items such as shoeboxes, toys, handbags, and electronics – solving the limitation of flat bubble mailers that cannot hold larger or irregularly shaped products.

Made from multi-layer co-extruded polyethylene with a bubble lining, the mailer offers excellent tear resistance, moisture protection, and cushioning. The tamper-evident press-seal strip ensures secure closure with clear proof of any unauthorized opening.

Compared to traditional carton-and-filler packaging, the gusseted mailer is lighter and takes up less storage space, reducing shipping costs. It combines packaging and cushioning in one, eliminating the need for additional fillers. Widely used for footwear, apparel, toys, electronics, and daily necessities requiring extra thickness capacity.

Our Advantages

Superior Expansion Capacity

Superior Expansion Capacity

Bottom gusset expands to accommodate larger, bulkier items.
Excellent Cushioning

Excellent Cushioning

Inner bubble lining absorbs impact, protecting shoeboxes, electronics, ceramics – outperforming standard PE mailers.
Secure Seal

Secure Seal

High-strength self-adhesive strip seals instantly; tamper-evident design deters unauthorized opening.
Tear & Puncture Resistant

Tear & Puncture Resistant

Tough outer film resists tearing and puncturing during sorting and shipping.

Primary Functions

  • Expansion Capacity – The bottom gusset design expands outward when loading thick items, accommodating bulkier products without the need for a carton.

  • Shock Absorption & Cushioning – The inner bubble lining effectively absorbs impact and vibration during transit, protecting the contents from damage.

  • Moisture & Dust Protection – The multi-layer co-extruded polyethylene outer film provides excellent waterproof and moisture-resistant performance, keeping contents dry and clean.

  • Easy Sealing – The press-sensitive self-adhesive strip seals instantly after liner removal – no tape or heat-sealing equipment required.

Usage Notes

  • Store in a cool, dry place away from high temperatures, moisture, and direct sunlight.

  • Before loading, manually expand the bottom gusset to ensure it is fully opened.

  • Place the item inside, making sure the bottom gusset is fully extended to accommodate the product thickness.

  • Remove the release liner from the adhesive strip, align the folded edge of the bag opening, and press firmly to ensure complete adhesion.

  • Do not exceed the designed thickness and weight capacity of the bag to prevent tearing at the bottom gusset.

FAQ

Service Warranty Policy​

Quality Commitment

Quality Commitment

Free replenishment if damage rate exceeds 0.5%
After-Sales Response

After-Sales Response

Quality issues will be addressed within 24 hours.

Environmental Protection Certification

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