Poly Mailers

Poly mailers for clothing, soft goods and everyday shipping

Shop poly mailers by listed size, material thickness, closure and case count. For folded clothing and other non-fragile items, a mailer can be a practical alternative to a carton. Start with the packed item: its width, length and thickness determine the size you need. Then compare white, clear-view or black poly mailers and select a case quantity that fits your order volume.

The 10x13 poly mailers below are three specific starting points. Their listed dimensions are not a guarantee of usable interior space: allow room for the item's thickness and the adhesive closure, and test the fit before committing to a larger order.

Compare 10x13 poly mailers

Selected 10x13 self-seal poly mailers
Product and SKU Listed size Thickness and closure Case count
Black poly mailers — CPM1013BK 10 x 13 in 2.5 mil, self-seal 100 mailers
Clear-view poly mailers — CV1013100PK 10 x 13 in 2.5 mil, self-seal 100 mailers
Clear-view poly mailers — CV1013 10 x 13 in 2.5 mil, self-seal 500 mailers

The two clear-view examples have the same listed size and thickness but different case quantities. Compare the exact SKU and case count when reordering; a similar product name does not establish the same pack quantity.

Price per mailer, white self-seal

White self-seal poly mailers by size
Size (in)MilMailers per casePrice per casePrice per mailer
6 x 92.5 1,000 $57.89 5.8¢
7.5 x 10.52.5 1,000 $78.58 7.9¢
9 x 122.5 500 $54.33 10.9¢
10 x 132.5 500 $63.86 12.8¢
12 x 15.52.5 500 $86.87 17.4¢
14 x 172.5 500 $118.90 23.8¢
14.5 x 192.5 250 $63.15 25.3¢
19 x 242.5 125 $51.12 40.9¢
24 x 242.5 125 $64.64 51.7¢
24 x 362.5 200 $230.39 $1.15
6 x 392.5 100 $69.07 69.1¢
8.5 x 332.5 100 $71.28 71.3¢
8.5 x 392.5 100 $77.34 77.3¢
9.5 x 452.5 50 $48.07 96.1¢
13 x 452.5 50 $65.74 $1.31
18 x 484 25 $45.30 $1.81
18 x 514 25 $52.05 $2.08

Divide the displayed case price by its mailer count to calculate the product price per mailer. For an order-level comparison, add quoted shipping and divide by the total number of mailers. Compare equivalent sizes and thicknesses before choosing the lowest unit price.

Clear-front, expansion and black mailers

Clear-front, expansion and black poly mailers, 2.5 mil
Size (in)StyleMailers per casePrice per casePrice per mailer
5 x 7Clear front 100 $17.63 17.6¢
6 x 9Clear front 100 $20.03 20.0¢
9 x 12Clear front 500 $79.68 15.9¢
10 x 13Clear front 500 $91.99 18.4¢
12 x 15.5Clear front 100 $38.06 38.1¢
14 x 17Clear front 100 $45.07 45.1¢
14.5 x 19Clear front 100 $65.09 65.1¢
10 x 13 x 2Expansion 100 $17.71 17.7¢
11 x 13 x 2Expansion 100 $22.89 22.9¢
11 x 13 x 4Expansion 100 $19.72 19.7¢
13 x 16 x 2Expansion 100 $32.54 32.5¢
13 x 16 x 4Expansion 100 $28.11 28.1¢
15 x 20 x 4Expansion 100 $37.43 37.4¢
20 x 24 x 4Expansion 100 $59.96 60.0¢
26 x 28 x 5Expansion 100 $84.62 84.6¢
10 x 13Black 100 $25.97 26.0¢
12 x 15.5Black 100 $38.06 38.1¢
14.5 x 19Black 100 $56.09 56.1¢

Use each row's dimensions, format and count to compare these options. An expansion mailer adds depth to its listed format; check its specific dimensions instead of treating it as interchangeable with a flat mailer. Black and clear-view options also serve different presentation needs.

Choose a mailer for the contents

Packaging choices to check before ordering
What you are packing Start with Check before buying
Folded clothing or soft accessories A flat self-seal poly mailer Packed thickness, fit and room to close the seal without forcing it
A bulkier soft item An expansion mailer The listed depth as well as width and length
An item whose appearance matters through the package A clear-view mailer The viewing area and a suitable label position
An item needing cushioning or crush protection A padded format or properly sized carton The complete protective packing method; plain poly film supplies no cushioning

Buying poly mailers in bulk

Build your order around the sizes you actually use. Keep separate counts for each SKU, and compare smaller and larger case packs using the same unit calculation. A larger case only helps if its contents fit your orders and you have room to store it.

For a multi-case order or recurring requirement, request a bulk quote with the SKUs, case quantities and delivery ZIP. Include your expected reorder frequency if known. If you are matching another supplier's packaging, the Uline poly mailer alternatives guide explains which specifications to compare.

Poly mailer questions

Will a 10x13 poly mailer fit my product?

Measure the item as it will ship, including folds and any inner packaging. Compare all dimensions and leave room for closure. A flat item's width and length alone cannot confirm the fit of a thicker item.

Are these examples self-seal?

Yes. All three linked 10x13 examples are listed as self-seal. Check the individual listing for closure details on other products, particularly when a return mailing is part of your process.

Should I choose a poly mailer or a padded mailer?

Plain poly mailers suit contents that do not need cushioning. Browse bubble mailers or padded mailers when padding is needed, and use a carton and appropriate protection when the contents need a rigid package.

Complete your packing setup with shipping labels and packing list envelopes, or browse the broader mailers and envelopes collection.

For larger white poly mailers, compare these exact listed dimensions and case counts with the 10x13 options above. A nominal 14.5x19 or expansion dimension is not a promise of usable space after the closure and packed-item thickness.

White self-seal formats for a separate fit check.
SKU Listed dimensions Listed film Mailers per case
B876100PK 14.5 × 19 in 2.5 mil; white 100
EPM20244 20 × 24 × 4 in; expansion format 2.5 mil; white 100

For 350 mailers of one selected 100-count format, four cases supply 400. Fit the actual contents with their packing, leave space for the closing flap and check a sample before replacing a current size. These unpadded poly mailers do not provide the cushioning of a bubble mailer or the rigidity of a corrugated carton.

IN STOCK Professional-grade 20x24x4 expansion poly mailers built for e-commerce brands shipping books, binders, and catalogs. Features self-seal closure with tear strip, puncture-resistant 2.5 mil polyethylene, and gusseted design for thicker items. Sold by the case of 100.
Envelopes & Mailers

20x24x4 2.5 Mil White Self-Seal Poly Mailers 100/Case

PN: EPM20244

20 x 24 x 4 in 2.5 Mil Polyethylene 100 PER CASE
$59.96 / CASE
IN STOCK Professional-grade 15x20x4" expansion poly mailers built for e-commerce brands shipping books, binders, and catalogs. Each case contains 100 white polyethylene mailers featuring self-seal closure with double perforation tear strip, 2.5 mil puncture-resistant material, and silver inner lining that accepts labels and ink perfectly.
Envelopes & Mailers

15x20x4 2.5 Mil Self-Seal Poly Mailers 100/Case

PN: EPM15204

15 x 20 x 4 in 2.5 Mil Polyethylene 100 PER CASE
$37.43 / CASE
IN STOCK 10x13" Clear View Poly Mailers, 2.5 Mil Self-Seal, Case of 100
Envelopes & Mailers

10x13 2.5 Mil Clear Self-Seal Poly Mailers 100/Case

PN: CV1013100PK

10 x 13 in 2.5 Mil Polyethylene 100 PER CASE
$25.97 / CASE
IN STOCK Durable 6x9 self-seal poly mailers engineered for e-commerce brands. Features 2.5 mil polyethylene construction with tear strip opening, puncture and water resistance, and strong seams that hold even when overpacked. Sold in cases of 1000 for consistent professional presentation.
Envelopes & Mailers

6x9 2.5 Mil Self-Seal Tear Strip Poly Mailers 1000/Case

PN: B871

6 x 9 in 2.5 Mil Polyethylene 1000 PER CASE
$57.89 / CASE
IN STOCK 10.5 x 7.5" Self-Seal Poly Mailers 2.5 Mil - Tear Strip, Case of 1000
Envelopes & Mailers

10.5x7.5 2.5 Mil Self-Seal Tear Strip Poly Mailers 1000/Case

PN: B872

10 1/2 x 7.5 in 2.5 Mil Polyethylene 1000 PER CASE
$78.58 / CASE
IN STOCK Heavy-duty 9x12 white poly mailing bags with integrated tear strip and self-seal closure. Each case contains 500 mailers made from 2.5 mil polyethylene, delivering puncture, tear, and water resistance for reliable product protection during transit.
Envelopes & Mailers

9x12 2.5 Mil White Self-Seal Tear Strip Poly Mailers 500/Case

PN: B873

9 x 12 in 2.5 Mil Polyethylene 500 PER CASE
$54.33 / CASE
IN STOCK 10x13" 2.5 Mil White Poly Mailers with Tear Strip - Case of 500
Envelopes & Mailers

10x13 2.5 Mil White Self-Seal Tear Strip Poly Mailers 500/Case

PN: B874

10 x 13 in 2.5 Mil Polyethylene 500 PER CASE
$63.86 / CASE
IN STOCK Protect your shipments with professional-grade self-seal poly mailers featuring a convenient tear strip and superior puncture resistance. These 12 x 15.5" white polyethylene mailers (2.5 mil) offer waterproof, tamper-evident protection in bulk cases of 500, ideal for e-commerce brands requiring reliable, cost-effective shipping solutions.
Envelopes & Mailers

12x15.5 2.5 Mil Self-Seal Tear Strip Poly Mailers 500/Case

PN: B875

12 x 15 1/2 in 2.5 Mil Polyethylene 500 PER CASE
$86.87 / CASE
IN STOCK Professional 14x17" self-seal poly mailers designed for ecommerce brands shipping high-value items. 2.5 mil polyethylene construction delivers puncture, water, and tear resistance with strong seams that stay intact even when overpacked. Bulk case of 500 white mailers with convenient tear strip opening and silver inner lining that accepts labels and stamps perfectly.
Envelopes & Mailers

14x17 2.5 Mil White Self-Seal Poly Mailers 500/Case

PN: B879

14 x 17 in 2.5 Mil Polyethylene 500 PER CASE
$118.90 / CASE
IN STOCK Heavy-duty 19x14.5" white poly mailers built for e-commerce brands that demand puncture and water resistance. 2.5 mil polyethylene construction with high-strength seams and professional silver-lined interior. Self-seal closure with reliable adhesion–250 mailers per case.
Envelopes & Mailers

19x14.5 2.5 Mil White Self-Seal Poly Mailers 250/Case

PN: B876

19 x 14.5 in 2.5 Mil Polyethylene 250 PER CASE
$63.15 / CASE
IN STOCK Durable 19x24" self-seal poly mailers built for e-commerce brands who demand protection and professionalism. 2.5 mil polyethylene construction resists punctures, tears, water, and tampering with high-strength seams that hold under pressure. White exterior with silver lining accepts labels and ink perfectly–125 mailers per case.
Envelopes & Mailers

19x24 2.5 Mil Self-Seal Poly Mailers 125/Case

PN: B877

19 x 24 in 2.5 Mil Polyethylene 125 PER CASE
$51.12 / CASE
IN STOCK Premium 24x24" self-seal poly mailers built for e-commerce brands shipping valuable items. 2.5 mil polyethylene construction delivers puncture, water, and tear resistance with high-strength seams that prevent tampering. White exterior with silver interior accepts labels and stamps perfectly–ships as case of 125.
Envelopes & Mailers

24x24 2.5 Mil Self-Seal Poly Mailers 125/Case

PN: B878

24 x 24 in 2.5 Mil Polyethylene 125 PER CASE
$64.64 / CASE
IN STOCK Professional 24x36 white poly mailers with self-seal tear strip protect e-commerce shipments from moisture, punctures, and tampering. Heavy-duty 2.5 mil polyethylene construction with high-strength seams handles overpacking without failure. Bulk case of 200 units delivers cost-effective shipping protection with label-ready white exterior and silver-lined interior.
Envelopes & Mailers

24x36 2.5 Mil White Self-Seal Tear Strip Poly Mailers 200/Case

PN: B913

24 x 36 in 2.5 Mil Polyethylene 200 PER CASE
$230.39 / CASE
IN STOCK Durable 6x39" self-seal mailers built from 2.5 mil polyethylene for reliable protection on every shipment. Press-and-seal closure ensures consistent, professional presentation while resisting punctures and moisture. Order by the case of 100 and eliminate shipping delays.
Envelopes & Mailers

6x39 2.5 Mil White Self-Seal Poly Mailers 100/Case

PN: LPM639

6 x 39 in 2.5 Mil Polyethylene 100 PER CASE
$69.07 / CASE
IN STOCK Premium 8.5 x 33" self-seal mailers built for e-commerce reliability. These 2.5 mil white polyethylene shipping bags feature durable tear-proof construction and weatherproof protection in every case of 100. Press-and-seal closure keeps parcels secure from warehouse to doorstep.
Envelopes & Mailers

8.5x33 2.5 Mil White Self-Seal Poly Mailers 100/Case

PN: LPM833

8 1/2 x 33 in 2.5 Mil Polyethylene 100 PER CASE
$71.28 / CASE
IN STOCK Durable 8.5" x 39" self-seal poly mailers designed for e-commerce brands that demand reliability. Features moisture-resistant 2.5 mil polyethylene construction with secure press-and-seal closure. Ships in convenient case of 100 units.
Envelopes & Mailers

8.5x39 2.5 Mil White Self-Seal Poly Mailers 100/Case

PN: LPM839

8 1/2 x 39 in 2.5 Mil Polyethylene 100 PER CASE
$77.34 / CASE
IN STOCK Protect your shipments with our 9.5x45" self-seal poly mailers–engineered from 2.5 mil polyethylene for superior puncture resistance and weatherproof performance. Press-and-seal closure eliminates tape and ensures professional presentation every time. Order by the case (50 mailers) and streamline your fulfillment operations.
Envelopes & Mailers

9.5x45 2.5 Mil White Self-Seal Poly Mailers 50/Case

PN: LPM945

9 1/2 x 45 in 2.5 Mil Polyethylene 50 PER CASE
$48.07 / CASE
IN STOCK Professional-grade 13x45" self-seal poly mailers built from puncture-resistant 2.5 mil polyethylene for secure, weatherproof shipping. Redi-strip closure ensures quick sealing and professional presentation every time. Ideal for e-commerce brands shipping long, narrow items–50 mailers per case.
Envelopes & Mailers

13x45 2.5 Mil Self-Seal Poly Mailers 50/Case

PN: LPM1345

13 x 45 in 2.5 Mil Polyethylene 50 PER CASE
$65.74 / CASE
IN STOCK Professional 18x48" self-seal poly mailers built from durable 4 mil polyethylene for e-commerce brands that demand reliability. Tear-proof construction with weatherproof adhesion resists punctures and moisture damage during shipping. 25 mailers per case for bulk efficiency.
Envelopes & Mailers

18x48 4 Mil White Self-Seal Poly Mailers 25/Case

PN: LPM1848

18 x 48 in Polyethylene 25 PER CASE
$45.30 / CASE
IN STOCK Heavy-duty 18x51" self-seal mailers built from durable 4 mil polyethylene for maximum puncture resistance and professional presentation. Moisture-resistant construction with quick-stick adhesive closure ensures secure, tamper-evident sealing every time. Order by the case (25 units) for reliable, cost-effective shipping protection.
Envelopes & Mailers

18x51 4 Mil Self-Seal Poly Mailers 25/Case

PN: LPM1851

18 x 51 in Polyethylene 25 PER CASE
$52.05 / CASE
IN STOCK Display products while protecting contents with our 5x7 clear view poly mailers featuring durable 2.5 mil self-sealing polyethylene. Transparent front window showcases items; opaque white back accommodates postage and addresses. Double perforated edges enable quick, clean opening.
Envelopes & Mailers

5x7 2.5 Mil Clear Self-Seal Poly Mailers 100-Pack

PN: CV57

5 x 7 in 2.5 Mil Polyethylene 100 PER CASE
$17.63 / CASE
IN STOCK Display your products while protecting them. These 6x9" clear view poly mailers feature a transparent front panel for product visibility and opaque back for postage. Self-sealing closure with double perforations ensures quick, reliable sealing every time. Tear-resistant 2.5 mil polyethylene construction holds up through handling and shipping.
Envelopes & Mailers

6x9 2.5 Mil Clear Self-Seal Poly Mailers 100/Case

PN: CV69

6 x 9 in 2.5 Mil Polyethylene 100 PER CASE
$20.03 / CASE
IN STOCK Display products while protecting shipments. These 9x12" clear view poly mailers feature a reliable self-seal closure and tear-resistant 2.5 mil polyethylene construction. Sold by the case of 500–the professional mailer choice for e-commerce brands prioritizing product presentation and shipping security.
Envelopes & Mailers

9x12 2.5 Mil Self-Seal Clear View Poly Mailers 500/Case

PN: CV912

9 x 12 in 2.5 Mil Polyethylene 500 PER CASE
$79.68 / CASE
IN STOCK 10x13" Clear View Poly Mailers, 2.5 Mil Self-Seal, Case of 500
Envelopes & Mailers

10x13 2.5 Mil Self-Seal Clear View Poly Mailers 500/Case

PN: CV1013

10 x 13 in 2.5 Mil Polyethylene 500 PER CASE
$91.99 / CASE
IN STOCK Display-front poly mailers designed for e-commerce brands who need professional presentation and reliable protection. Clear front window showcases contents while opaque back accommodates postage and labeling. Self-seal closure with double perforations for fast, easy opening–shipped in cases of 100.
Envelopes & Mailers

12x15.5 2.5 Mil Clear Self-Seal Poly Mailers 100/Case

PN: CV1215

12 x 15 1/2 in 2.5 Mil Polyethylene 100 PER CASE
$38.06 / CASE
IN STOCK Display-ready 14x17" clear view poly mailers with professional opaque back for addresses. Self-seal closure with double perforations for quick, secure sealing. 2.5 mil tear-resistant polyethylene protects contents in 100-count cases.
Envelopes & Mailers

14x17 Self-Seal Clear View Poly Mailers 100/Case

PN: CV1417

14 x 17 in 2.5 Mil Polyethylene 100 PER CASE
$45.07 / CASE
IN STOCK Display your products with confidence using these 14.5x19" Clear View Poly Mailers. Featuring a durable 2.5 mil tear-resistant polyethylene construction with self-seal closure and dual perforations for easy opening, these mailers combine professional presentation with reliable protection. Sold by the case of 100.
Envelopes & Mailers

14.5x19 Self-Seal Clear View Poly Mailers 100/Case

PN: CV1419

14 1/2 x 19 in 2.5 Mil Polyethylene 100 PER CASE
$65.09 / CASE
IN STOCK 10x13x2 Expansion Poly Mailers 2.5 Mil Self-Seal White - Case of 100
Envelopes & Mailers

10x13x2 2.5 Mil White Self-Seal Poly Mailers 100/Case

PN: EPM10132

10 x 13 x 2 in 2.5 Mil Polyethylene 100 PER CASE
$17.71 / CASE
IN STOCK Professional-grade 11x13x2 expansion poly mailers designed for e-commerce brands shipping thicker items like books, binders, and catalogs. 2.5 mil puncture and moisture-resistant polyethylene with self-seal closure and easy tear strip. 100 mailers per case.
Envelopes & Mailers

11x13x2 2.5 Mil White Self-Seal Poly Mailers 100/Case

PN: EPM11132

11 x 13 x 2 in 2.5 Mil Polyethylene 100 PER CASE
$22.89 / CASE
IN STOCK Professional-grade 11x13x4" expansion poly mailers built for e-commerce brands that demand durability. 2.5 mil tear-proof polyethylene with self-seal closure, gusseted bottom for thick items, and puncture/moisture resistance. Ships 100 per case.
Envelopes & Mailers

11x13x4 2.5 Mil Self-Seal Poly Mailers 100/Case

PN: EPM11134

11 x 13 x 4 in 2.5 Mil Polyethylene 100 PER CASE
$19.72 / CASE
IN STOCK Professional-grade 13x16x2" expansion poly mailers built for e-commerce brands shipping thicker items like binders and catalogs. Our 2.5 mil self-seal mailers offer puncture, moisture, and tear resistance with a gusseted design that accommodates contents up to 2" thick. Case of 100 units ready to ship.
Envelopes & Mailers

13x16x2 2.5 Mil White Self-Seal Poly Mailers 100/Case

PN: EPM13162

13 x 16 x 2 in 2.5 Mil Polyethylene 100 PER CASE
$32.54 / CASE
IN STOCK Professional-grade 13x16x4" expansion poly mailers designed for e-commerce brands shipping books, binders, catalogs, and thick items. 2.5 mil white polyethylene with self-seal closure, double-perforation tear strip, and puncture/moisture/tamper-resistant construction. Sold by the case of 100 units.
Envelopes & Mailers

13x16x4 2.5 Mil White Self-Seal Poly Mailers 100/Case

PN: EPM13164

13 x 16 x 4 in 2.5 Mil Polyethylene 100 PER CASE
$28.11 / CASE
IN STOCK Professional-grade 26x28x5" expansion poly mailers with self-seal closure and gusseted bottom for books, binders, and catalogs. 2.5 mil white polyethylene resists punctures, moisture, and tears while maintaining strong seams even when overpacked. Sold in cases of 100.
Envelopes & Mailers

26x28x5 2.5 Mil White Self-Seal Poly Mailers 100/Case

PN: EPM26285

26 x 28 x 5 in 2.5 Mil Polyethylene 100 PER CASE
$84.62 / CASE
IN STOCK 10x13 Black Poly Mailers 2.5 Mil Self-Seal, Case of 100
Envelopes & Mailers

10x13 2.5 Mil Black Self-Seal Poly Mailers 100/Case

PN: CPM1013BK

10 x 13 in 2.5 Mil Polyethylene 100 PER CASE
$25.97 / CASE
IN STOCK Professional 12x15.5" black poly mailers with self-seal closure protect your products in transit. These 2.5 mil polyethylene envelopes offer puncture, water, tear, and tamper resistance with high-strength seams that stay sealed even when overpacked. Includes 100 mailers per case–ideal for branded shipping at scale.
Envelopes & Mailers

12x15.5 2.5 Mil Black Self-Seal Poly Mailers 100/Case

PN: CPM1215BK

12 x 15 1/2 in 2.5 Mil Polyethylene 100 PER CASE
$38.06 / CASE
IN STOCK Professional-grade black poly mailers with integrated self-seal closure keep your shipments secure and protected. Each 14.5x19" mailer features 2.5 mil polyethylene construction that resists punctures, tears, water, and tampering–ideal for e-commerce brands requiring reliable packaging. Ship 100 units per case with labels and stamps that adhere perfectly to the colored exterior and silver lining.
Envelopes & Mailers

14.5x19 2.5 Mil Black Self-Seal Poly Mailers 100/Case

PN: CPM1419BK

14 1/2 x 19 in 2.5 Mil Polyethylene 100 PER CASE
$56.09 / CASE

Product Help Request

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Buying path

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Larger orders

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What to check first

  • Usable inside size
  • Mil thickness
  • Closure type
  • Case quantity
Common wrong-order risk: Using a poly mailer for items that need edge protection. Confirm the item is soft or protected before choosing a flexible mailer.
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