Product Specifications
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Material: Heavy-duty, high-density co-extruded polyethylene (2.85 mil thickness)
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Dimensions: 19" Width x 24" Height (plus a 2" protective sealing lip)
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Closure Type: Pressure-sensitive, permanent peel-and-seal thermal adhesive strip
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Color: Clean white exterior with an opaque, dark inner privacy lining
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Protection Level: High-grade resistance against water, punctures, tears, and tampering
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Package Contents: Available in wholesale bulk quantities (minimum order requirements apply)
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Eco-Characteristics: 100% recyclable material structure
Heavy-Duty Poly Mailers for High-Volume Shipping
Streamline your e-commerce fulfillment with high-performing, industrial-strength packaging. These 19" x 24" white poly mailer bags are specifically engineered for online businesses, warehouses, and commercial brands that need to ship larger merchandise securely. Designed with an ultra-durable 2.85 mil thickness, these heavy-duty plastic envelopes insulate your products against the toughest transit conditions while keeping your postage costs down compared to rigid cardboard boxes. Whether you are a growing apparel retailer or an established logistics hub, Shop Backpacks Online provides the strength and privacy your professional shipments demand.
Unbeatable Weatherproof Protection and Security Features
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All-Weather Waterproof Barrier: Rain, snow, and moisture stand no chance. The co-extruded polyethylene structure locks out external liquids, ensuring items arrive completely clean and dry.
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Industrial Puncture and Tear Resistance: Built to survive active sorting belts and rough handling. The multi-layered plastic resists stretching, sharp edges, and accidental punctures.
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Tamper-Evident Security Seal: The hot-melt adhesive strip creates an instant, unyielding chemical bond. Once closed, the envelope cannot be reopened without leaving clear, visible signs of structural tearing.
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Complete Privacy Masking: Features a dual-layer design with a white exterior and an opaque silver-black inner lining. This stops light transmission entirely, completely hiding high-value inventory from plain view.
Ideal Applications for Large Format Shipping Envelopes
These oversized #7 mailing bags provide the generous volume needed to package large, non-fragile items smoothly without overstretching. They are perfectly suited for outer apparel shipping, such as bulky winter coats, heavy denim sets, bedding linens, pillows, and thick blankets. They also function excellently as protective overpacks for branded subscription boxes, keeping primary packaging immaculate and scratch-free through long-distance shipping networks. The ultra-smooth interior allows fabrics and boxed items to slide deep inside the bag effortlessly during high-speed packing intervals.
Professional Fulfillment Efficiency for Your Business
When fulfillment speed impacts your bottom line, every second saved matters. These self-sealing shipping bags eliminate the tedious workflows of folding cardboard boxes, cutting tape strips, and filling empty void spaces. Operators simply slide the product in, peel off the protective backing, and fold over the top flap to seal. This straightforward optimization lets your packaging crew handle more orders per hour. Backed by Shop Backpacks Online's strict product safety standards, you can count on a reliable, professional brand presentation across every order delivered.
