Poly Mailer Sizes: Complete Guide
Poly mailers are lighter and cheaper than boxes for many items. Find the right size for your products.
What size poly mailer do I need?
Common sizes: 6x9" for jewelry/accessories, 10x13" for T-shirts, 12x15.5" for sweaters/jeans, 14.5x19" for multiple items, 19x24" for jackets. Choose a size with 1-2" extra space for the seal.
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| Carrier | Service | Price | Delivery Time | |
|---|---|---|---|---|
| 6x9" Poly Mailer | Accessories | $0.05-0.10 | Per mailer | Cheapest |
| 10x13" Poly Mailer | T-shirts | $0.08-0.15 | Per mailer | |
| 12x15.5" Poly Mailer | Pants/sweaters | $0.12-0.20 | Per mailer | |
| 14.5x19" Poly Mailer | Multiple items | $0.15-0.25 | Per mailer |
Accessories
T-shirts
Pants/sweaters
Multiple items
* Prices shown are discounted ShipWave rates. Actual rates vary by exact dimensions, weight, and origin/destination.
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Standard Poly Mailer Sizes
6x9": Jewelry, phone cases, small accessories
10x13": T-shirts, leggings, light tops
12x15.5": Jeans, sweaters, dresses
14.5x19": Multiple items, bulky sweaters
19x24": Large orders, winter coats
Poly Mailers vs Boxes
Use poly mailers: Clothing, soft goods, non-fragile items, lightweight products.
Use boxes: Fragile items, structured products, items that shouldn't bend.
Poly mailers save 20-40% on shipping by reducing weight and dimensions.
Pro Tips to Save More
Size Up Slightly
Choose with 1-2" extra space. The seal needs room to close.
Buy in Bulk
Poly mailers cost $0.05-0.25 each in bulk vs $0.50+ single.
Consider Padded Mailers
For semi-fragile items, padded poly mailers offer some protection.
Frequently Asked Questions
- Yes, standard poly mailers are waterproof polyethylene plastic.
- Yes, if they fit. Mailers up to about 12x15" typically fit residential mailboxes.
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Related Shipping Guides
Selecting the right box size saves money and protects items. Use our guide to find the perfect fit.
Shipping Supplies: Complete Packing GuideThe right shipping supplies protect your products and can reduce costs. Learn what you need.
Dimensional Weight: How to Calculate and OptimizeDimensional weight (DIM) can make light packages expensive. Learn the formula and strategies.
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