Poly mailers, Shipping bags, Courier envelopes
Poly mailers made in our own factory, in your exact size.
Coex poly mailers in white/gray and black, plain or printed with your brand. Standard sizes from 3 × 4 in to 31 × 43 in, and any other size or mil on request. Orders from one pallet.
Specifications
| Specification | What we make |
|---|---|
| Material | Co-extruded LDPE: white or gray outside, black inside, fully opaque |
| Sizes | Standard 3 × 4 in up to 31 × 43 in, 2 in flap; other sizes on request |
| Thickness | 1.5–4 mil (38–100 µm); other thicknesses on request |
| Closure | Permanent self-seal adhesive strip, tamper-evident |
| Recycled content | Virgin or 70% post-consumer recycled (PCR) |
| Printing | Plain, or printed up to 6 colors (flexo) |
| Packing | Boxed to your count, or wicketed for packing lines |
Nothing here is fixed. These are our common ranges; we produce other sizes, thicknesses, materials and options to your specification. 1 mil = 25.4 micron, see the size and mil guide.
Popular US sizes
| Size (W × L) | Typical use |
|---|---|
| 6 × 9 in | Jewelry, accessories, phone cases |
| 7.5 × 10.5 in | Cosmetics, socks, small apparel |
| 9 × 12 in | Documents, books, folded T-shirts |
| 10 × 13 in | T-shirts, leggings, the e-commerce standard |
| 12 × 15.5 in | Hoodies, jeans, knitwear |
| 14.5 × 19 in | Jackets, two or three garments |
| 19 × 24 in | Bulky apparel, home textiles |
| 24 × 24 in | Bedding sets, pillows |
| 28 × 40 in | Comforters, large bulky items |
Width × length, excluding the flap. Every size is made to order, so anything in between is possible.
Options
- White/gray or black coex
- Custom printed, 1–6 colors
- Dual adhesive strip for returns
- Packing list pocket on the front
- Mailers with a carry handle
- Wicketed for fast packing lines
- 70% post-consumer recycled film
- Your exact width, length and flap
Questions
Which mil should I choose?
Most apparel ships well in 2.0–2.5 mil. Heavier, boxed or sharp-cornered items need 3–4 mil. Tell us what you ship and we will put two or three thicknesses in your free sample kit.
Can you match the mailer I buy today?
Yes. Send us the size, mil and color, or a photo of your current mailer, and we will produce to that specification.
Do you make return mailers?
Yes. Dual-strip mailers have a second adhesive strip so your customer can send the item back in the same bag.
What is the minimum order?
One pallet, and you can mix sizes.
Get a quote for poly mailers
We reply within one business day with sizes, mil and a delivered price.
- Free sample kit shipped to your US address
- Delivered prices, DAP to your door
- Orders from one pallet, mixed sizes welcome
- Plain, printed with your brand, or fully neutral
- Meet in person in January–February 2027
Prefer email? sales@kargopekusa.com