Poly Mailer Size Chart: What Actually Fits in Each Size
Key takeaways
- Measure the product flat, then add about 2 in to the width and 3 in to the length.
- 10x13 is the best-selling size: 2–3 garments or small home goods.
- Two well-chosen sizes cover 80%+ of orders; 2.5 mil film is the sweet spot for parcel networks.
Most shippers stock too many mailer sizes. In practice, two well-chosen sizes cover 80%+ of orders for a typical e-commerce catalog. Here's the chart we give our wholesale customers, with real-world contents for each size.
The chart
| Size (inches) | Typical contents | Common use |
|---|---|---|
| 6 x 9 | Jewelry, cosmetics, phone cases, stickers | Small accessories |
| 7.5 x 10.5 | A single folded tee, small books | Lightweight apparel |
| 9 x 12 | 1–2 tees, leggings, documents | The apparel workhorse |
| 10 x 13 | 2–3 garments, small home goods | The best-selling size in e-commerce |
| 12 x 15.5 | Hoodies, jeans, multi-item orders | Heavier apparel |
| 14.5 x 19 | Bulky garments, bedding sets, multi-unit orders | Big orders |
| 19 x 24 | Comforters, jackets, wholesale packs | Oversize soft goods |
| 24 x 24 | Pillows, bulk apparel packs | The biggest soft-goods jobs |
How to measure what you need
Lay the product flat, measure width and length, then add roughly 2 inches to the width and 3 inches to the length for seams, gusseting around the product, and the fold-over lip. If the product has real thickness (a hoodie, a boxed item), add the thickness to BOTH dimensions.
Pick two sizes, not six
Every extra SKU you stock is cash sitting on a shelf and a picking mistake waiting to happen. Pull your last 200 orders, bucket them by garment count, and you'll almost always land on one everyday size (usually 9x12 or 10x13) plus one big size (12x15.5 or 14.5x19). Stock those two deep, and keep a case of an oversize for the exceptions.
Thickness matters more than size
A correctly-sized mailer in a flimsy film still fails. For most parcel networks, 2.5 mil is the sweet spot — real puncture resistance without paying for plastic you don't need. We manufacture our poly mailers on our own lines in Tijuana and ship from U.S. inventory, which is how the published pallet pricing stays where it is.
FAQ
What is the most common poly mailer size? 10x13" is the workhorse of e-commerce — it fits 2–3 garments or most small home goods, which is why most shippers anchor on it and add one size up or down.
How do I measure a poly mailer? Width x length in inches on the usable interior. Allow 1–2" beyond your folded product in both directions so the mailer seals flat without stressing the seams.
Should I stock more than two mailer sizes? Usually no — two well-chosen sizes cover 80%+ of orders for a typical catalog. Add a third only when you keep re-bagging orders that don't fit.
What size poly mailer fits a hoodie? A 12x15.5 poly mailer fits hoodies, jeans and multi-item orders. Bulkier garments and bedding sets move up to 14.5x19.
Buying at volume?
Our wholesale line sheet publishes per-unit pricing by pallet tier — no quote request needed to see numbers. Want to touch the product first? The $29 sample kit covers six product lines and is credited in full against your first wholesale order.
See the line sheetOrder the $29 sample kit
Questions? Call (619) 703-0245 — we manufacture our poly & bubble mailers in Tijuana and ship from U.S. inventory.