Production Time:

2-4 weeks

5,000–10,000 units

ea. minimum order

Polymailer

Rigid / Stay-Flat Mailer

Rigid stay-flat mailers are constructed from two sheets of thick corrugated or grey board bonded with adhesive, forming a flat, board-stiff envelope that resists bending under normal shipping conditions. The boards are typically 2-3mm total thickness, sufficient to survive standard carrier handling without bowing. The closure is a peel-and-seal adhesive strip. They can be left natural kraft or printed on the outside.

Stay-flat mailers are used for shipping prints, photos, certificates, framed artwork, books, and any flat product where bending or creasing would constitute damage. They are favored by print sellers, photographers, artists, and brands shipping signed merchandise, collector items, or presentation-quality flat goods.

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Materials & Features

SHIP IT. BRAND IT. NAIL IT.

Polymailers are your last touchpoint before the unbox. Make them work harder with the right material and print.

Eco Options

30–100% PCR content, biodegradable & compostable materials

Print

1-color to full CMYK, front & back coverage

Add-Ons

Double peel & seal for returns, tear strips, packing slip pouches

Materials

Standard LDPE, co-extruded poly, recycled PCR, compostable options

Need something off-menu?
Chances are, we can develop it from scratch.

Big Factory Power,
Boutique Attention

Your packaging shouldn’t be a bottleneck. We make sure it’s your competitive edge.

1-week sampling, 3 week production timelines

Based in Asia, trusted globally

Transparent pricing and no language barriers

End-to-end manufacturing oversight

Dedicated project managers and 24/7 support

Got Questions?

frequently asked questions

What is your minimum order quantity (MOQ)?

Boxes and insert cards start at 2,500 units. Poly mailers and pouches run 5,000-10,000 units. Glass and custom bottles sit higher, 5,000-10,000 units, because mold tooling gets expensive below that. Send us your project details and we'll give you an exact MOQ and quote. No back-and-forth guessing games.

What materials do you manufacture in?

Pretty much everything.

Paper (cardstock, corrugated, chipboard, kraft), plastic (PET, HDPE, PP, bioplastics), glass (jars, bottles, vials, droppers), and metal (tin containers, aluminum). If your product needs packaging, we've probably made something like it before.

We also handle all the finishes that make packaging feel worth keeping: foil stamping, embossing, soft-touch lamination, spot UV, custom die cuts, Pantone matching. The stuff that turns a box into an experience (and gets you those unboxing videos).

If you don't see it listed here, ask anyway. What's on our site is honestly just the starting point.

What does it mean that Paking Duck is a "one-stop shop"?

It means you stop juggling vendors.

Boxes, pouches, bottles, jars, tins, stickers, labels, tissue paper, packing paper, poly mailers, freight. All from us. One point of contact, one production timeline, one invoice. That's the whole pitch.

Most brands piece their packaging together across 4 or 5 suppliers, then spend half their time playing project manager between all of them. We've worked with over 1,000 brands and the ones who consolidate with us always say the same thing: they wish they'd done it sooner. Less coordination, fewer surprises, and one team that's accountable from concept through delivery.

Where are your manufacturing facilities?

Southern China. We run production through our own facilities and dedicated factory partners in Fuzhou, Shenzhen, and Guangzhou, with a team on the ground managing everything.

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That means we're not sending specs overseas and hoping for the best. Our people are in the factories overseeing quoting, sampling, and QC in person. We handle DDP shipping straight to your door (or your 3PL), so you don't have to think about freight, customs, or any of that.

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The equipment matters too. Our production facilities run printing and finishing machines imported from Germany and Japan. That's how we hit the quality that brands like Madhappy, Tower 28, and Venus et Fleur expect on every run.