Handle your largest shipments with ease using the BSTech Heavy-Duty Foil Mailing Envelopes (FB11). Specifically engineered for oversized items, bulky goods, and high-volume e-commerce orders, these extra-large 6XL shipping bags offer industrial-strength protection, complete privacy, and streamlined handling for your biggest parcel deliveries.
Constructed from a premium, co-extruded 50-micron thick plastic film, these mailers provide heavy-duty puncture and tear resistance, preventing sharp corners or heavy contents from breaking through during transit. The advanced dual-layer design features a clean, bright white exterior that presents a professional image to your customers and ensures shipping labels stand out, paired with a solid black interior that provides 100% opacity. Your items stay completely blacked out, ensuring full confidentiality and extra security from your warehouse to the customer’s door.
Equipped with a powerful, tamper-evident self-adhesive strip, sealing up large parcels is exceptionally fast. Once the permanent adhesive is sealed down, it cannot be reopened without visibly tearing the bag, acting as a highly effective deterrent against tampering.
Features & Benefits
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Oversized 6XL Capacity: Specifically designed to accommodate large, high-volume items that standard mailing bags simply cannot fit.
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100% Opaque Privacy Shield: The deep black inner layer completely blocks light, keeping valuable or bulky merchandise hidden from outside eyes.
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Industrial-Strength Protection: The 50 µm thickness acts as a rugged barrier against water, rain, dirt, and severe stretching through global postal networks.
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High-Speed Sealing: Save time on your packing line with the easy peel-and-seal strip—eliminating the need for packing tape or scissors even on oversized boxes.
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Optimized Pack Size: Package includes an inner carton of 100 pieces, perfect for merchants who need heavy-duty large mailers on hand without dedicating massive warehouse space to storage.
Specifications
General Specifications
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Brand: BSTech
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Product Code: FB11
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Format Size: 6XL (Oversized)
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Pack Quantity: 100 pieces (Inner carton)
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Product Colour: White (Exterior)
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Inner Colour: Black (Interior / Opaque)
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Closure Type: Self-adhesive peel-and-seal strip
Weight & Dimensions
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Width: 580 mm
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Length: 750 mm
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Maximum Pouch Thickness: 50 µm (microns)
Ideal For Shipping:
Winter jackets, heavy coats, bedding, blankets, pillows, shoeboxes, sporting equipment, backpacks, and large e-commerce orders that require maximum space and dependable protection.





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