9x12 Inch Poly Mailers

Color — White

Quantity

Price

$55.99

$59.99 $55.99

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We ship from📍LA📍Houston📍New Jersey

Quantity

Spec.

Inner Size: 9 x 12" (Approx. 22.9 x 30.5 cm)
Pack per Case: 1000 Pack per Case
Closure Type: Self-Sealing
Material: Polyethylene (PE)
Shape: Rectangular
Security Feature: Tamper-Evident Seal
Recyclability: Recyclable

Product Features

9x12 poly mailers are a practical option for shipping flat and lightweight items that need a little more room. This size works well for online small business sellers handling apparel, notebooks, catalogs, craft materials, and other everyday orders. A poly mailer 9x12 helps keep packaging simple, reduces added weight, and gives shipments dependable protection in transit.

Waterproof outer layer

Helps protect orders from rain, moisture, and splashes during delivery.

Tear-resistant material

Built to handle sorting, packing, and transit with fewer rips or split edges.

Lightweight for lower shipping costs

Helps reduce unnecessary package weight for more cost-effective fulfillment.

Roomy size for flat items

A good fit for shirts, printed materials, and other soft or non-fragile products.

Easy choice for daily e-commerce shipping

Supports fast packing for small business sellers managing regular order volume.

Why Customers Choose Jiaropack?

1.

Made in the USA
Ensuring high quality, strict standards, and reliable product performance.

2.

Nationwide Warehouse Network
Multiple locations across the U.S. enable fast, stable, and efficient delivery.

3.

Outstanding Cost-Performance
Competitive pricing without compromising on quality.

4.

Stable Supply Chain
Consistent product availability you can depend on.

5.

Comprehensive After-Sales Support
Responsive, reliable service to support customers at every stage.

OUR FACTORY

Greenway Plastics is a wholly owned factory of Jiaropack.

Originally established in 2006, the company was further strengthened in 2009 through the merger of two family-run businesses—Grandway Plastics and Evergreen Plastics—bringing together decades of manufacturing experience and a strong commitment to quality.

With nearly 20 years of industry experience, we have built a solid reputation for reliability, consistency, and efficient production.

Based in Houston, Texas, our factory produces high-quality plastic products for businesses and households across the United States.

Visit Our Factory In Houston

We welcome customers to visit our warehouse and production facility.

4570 S Wayside Dr,Houston, TX 77087, USA
713）643-2288
wholesale@jiaropack.com

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9x12 poly mailer measures approximately 9" x 12" (about 22.9 cm x 30.5 cm) when laid flat, not counting the flap. Interior capacity is slightly smaller due to side seams. Made from polyethylene (PE), each bag features excellent water and tear resistance along with a strong self-sealing adhesive strip for quick, secure closure.

The 9x12 size works well for small, lightweight, non-fragile items like a folded t-shirt, a thin long-sleeve, leggings, a light kids' outfit, small soft accessories, or a couple of thin garments packed flat. It's also a great fit for documents, handmade goods, and boutique packaging — a versatile everyday size for small e-commerce sellers.

JiaroPack 9x12 poly mailers are lightweight, waterproof, and tear-resistant, designed to keep parcels secure and professional during every delivery. Their lightweight construction with strong stickiness helps reduce transportation costs while ensuring product safety in transit. Free shipping is included on all orders across the United States, and multiple color options are available to match your brand.

Yes. We offer full customization services, including Size customization Color customization Thickness adjustment Logo printing Pattern design Packaging customization Eco-friendly material options The minimum order quantity (MOQ) for customization is usually 20,000 pcs, depending on specifications.

Yes. We provide tiered pricing based on order quantity, size, material, and shipping method. The larger the order, the more competitive the unit price—ideal for wholesalers, brands, and long-term partners.

Yes. We have our own production factory in Houston, and our supply chain also sources from Asia. This allows us to better meet different customer needs for pricing, lead time, customization, and bulk purchasing while ensuring stable product quality and strong supply capacity.

9x12 Inch Poly Mailers

Spec.