Model No:P512
Poly Mailer Bags - 10 x 13"
Ship Smart with SupplyLand's Poly Mailer bags!
- Tough Cookies: Our 3 mil polyethylene mailers laugh in the face of moisture and scoff at punctures. They’re your shipment’s superhero!
- Seal in a Snap: Our Poly shipping mailers are just press to seal. Stick it shut in a snap, no fuss, no muss.
- Rip to Open Tear Strip: Opening your package is a breeze, just rip away. Fast, fun, and frustration-free.
- Fits All Shapes: Big or small, our shipping mailers fit them all. SupplyLand provides a huge range of sizes, as one size doesn't fit all.
- For Every Seller: Shipping is made easy for all your selling needs! From blankets to books, we've got you covered. Let's get your products on the move!
- Smiles Guaranteed: Join the SupplyLand fun. Ship it, love it, and spread the joy with every parcel.
Width (in.) : 10
Length (in.) : 13
Color : White
Qty / Case : 100
Qty / Pack : 100
Qty / Pack : 100
Thickness (Mil.) : 3
Poly Mailer Bags - 10 x 13"
P512

Ship Smart with SupplyLand's Poly Mailer bags!
- Tough Cookies: Our 3 mil polyethylene mailers laugh in the face of moisture and scoff at punctures. They’re your shipment’s superhero!
- Seal in a Snap: Our Poly shipping mailers are just press to seal. Stick it shut in a snap, no fuss, no muss.
- Rip to Open Tear Strip: Opening your package is a breeze, just rip away. Fast, fun, and frustration-free.
- Fits All Shapes: Big or small, our shipping mailers fit them all. SupplyLand provides a huge range of sizes, as one size doesn't fit all.
- For Every Seller: Shipping is made easy for all your selling needs! From blankets to books, we've got you covered. Let's get your products on the move!
- Smiles Guaranteed: Join the SupplyLand fun. Ship it, love it, and spread the joy with every parcel.
- Product Info
- Specifications
- FAQs
- Options
- None
Weight:
- Unit Wt. (lbs.): 4
Features:
- Print with permanent marker or ballpoint pen directly on mailer surface. Allow time to dry to avoid smearing.
- Labels will adhere to mailer surface once applied with normal pressure.
Size:
- To Choose the Correct Size:
- Determine the width of mailer.
- Width of product + thickness of product + 1/2"
- Determine the length of mailer.
- Length of product + thickness of product + 2"

Dimensions:
- Dimensions in the chart do not include flap.
- Flap: 2"
Material:
- Three layer co-extruded polyethylene.
- Material is water resistant; seal is not.
Shelf Life:
- 1 year if stored between 40° - 100° F.
Recycling:
- Recyclable #4
- Recycled Content:
- Post-consumer: Up to 30%
Specifications:
- Acid free
The Ultimate Guide to Poly Mailers for E-Commerce Success
In the world of e-commerce platforms, delivering products safely and cost-effectively is crucial to success. SupplyLand's Polymailers have emerged as a popular solution for businesses looking to optimize their shipping processes. These lightweight, durable plastic envelopes offer many benefits when shipping a wide range of products.
What Are Poly Mailers?
Poly mailers are plastic, waterproof envelopes made from polyethylene film. This material is a blend of plastic resin, melted down and extruded into a film, then converted into versatile mailers. These envelopes make shipping easy with their self-sealing closure and label-friendly design.
The Benefits of Using Poly Mailers
- Waterproof Protection: Keeps items dry during transit.
- Durability: Resistant to punctures and tears.
- Security: Features secure adhesive closures.
- Privacy: Non-transparent material protects customer privacy.
- Lightweight: Reduces shipping costs.
- Compact Storage: Saves space in your storage area.
- Efficiency: Easy to handle and use for fast-paced shipping environments.
Why should you consider using poly mailers?
Did you know that poly mailers can help reduce your shipping costs? These mailers are much lighter than boxes. Carriers use a lower dimensional weight value to calculate shipping fees. Ultimately, it can save you some bucks while still ensuring your packages reach their destination safely.
What industries use poly mailers?
Poly mailers are most commonly used by e-commerce businesses, online retailers, and medical and pharmaceutical companies.
What types of products are ideal to ship in poly mailers?
Poly mailers are ideal for shipping goods like clothing, bedding, towels, fabrics, footwear, books, accessories, and non-perishable items.
Although poly mailers are versatile, there are some situations when poly mailers are not ideal:
- Shipping fragile items
- Shipping multiple products at the same time
- The product is too large
What is the best way to ship poly mailers?
You can ship poly mailers via USPS, UPS, FedEx, DHL, etc.
Shipping rates will vary depending on the carrier, the distance to ship the product, and the shipping service selected.
Are poly mailers considered envelopes?
Poly mailers are considered non-paper envelopes. Manual handling is required for these items, which cannot be sorted by machines and result in additional charges.
Can you ship poly mailers via USPS?
Yes, poly mailers can be shipped with the US Postal Service. Poly mailers can be shipped using USPS First Class, Priority Mail or Media Mail services.
- First Class – This applies when shipping a package weighing 13 oz. or less. It is the cheapest way to ship items and is best for lightweight items.
- Priority Mail—This service can be used to ship packages weighing up to 70 lbs. It typically delivers packages in 1-3 business days. Shipping charges are calculated based on the distance from the ship point to the destination.
- Media Mail – A cost-effective service shipping books, CDs, DVDs, and other print materials.
What are USPS rules and guidelines for poly mailers?
Poly mailers must be at least 2 mils thick for shipments up to 5 lbs. and at least 3 mils thick for shipments up to 10 lbs.
- The overhang of the poly mailers should not exceed ½” when the package is laying flat.
- First Class Mail can be used for a poly mailer weighing less than 16 oz.
- Priority Mail can be used for any poly mailer weighing under 70 lbs.
- USPS Media mail can be used for any poly mailer weighing under 70 lbs. It can contain digital products, books, DVDs, vinyl records, sound recordings, and printed music.
Are poly mailers recyclable?
Poly mailers can be recycled. You can recycle eco-friendly poly bags at a local grocery store, where most offer a collection bin for plastic grocery bags.
How do you choose the right size poly mailer?
- Measure your items – Fold items and arrange in a manner consistent with how they will be shipped. Use a tape measure or ruler to determine the length, width and height of the item/s. Take note of your measurements.
- Use formulas to determine minimum required mailer dimensions:
- Minimum Width = Item Width + Item Depth + 1”
- Minimum Length = Item Length + Item Depth + 2”
- Thicker fabrics take up more space when packaged. For instance, a knitted wool jumper takes up twice as much space as a long-sleeved cotton t-shirt. Similarly, jeans are bulkier than leggings and fleece stockings take up more space than sheer stockings.
- If you’re still unsure after measuring and considering the thickness of your items, go up one size level to be safe.
What is the best size poly mailer for clothing?
Select sizes that fit customer’s purchase habits, whether buying one or in bulk. Ensure the poly mailers you are considering are durable and weather-proof to protect the customer’s clothing order.
- 7 ½ x 10 1/2” (P510): Socks and underwear.
- 9 x 12” (P511): T-shirts, thin shirts, light undergarments, pajama shorts, mini skirts, and children’s size clothing.
- 10 x 13” (P512): This versatile size is ideal for blouses, dress shirts, shorts, skirts, and more. Up to five large shirts can fit comfortably, depending on the fabric thickness and folding method.
- 12 x 15 ½” (P513): Perfect for thicker and/or longer clothing items, such as sweaters, jeans, dresses, sweatshirts and hoodies, typically up to size large.
- 14 ½ x 19” (P514): This size is suitable for all types of clothing, including shirts, dresses, pants, coats, vests, and more. It is also recommended for larger sizes such as XL and XXL. This size is also recommended for blankets and bedding items.
Can I put a stamp on a poly mailer?
Yes, you can use stamps to ship poly mailers. The amount of stamp postage required to ship the mailer will depend on the size and weight of the filled mailer.
SupplyLand Poly mailers can enhance your e-commerce shipping processes, reduce costs, and create memorable unboxing experiences for customers. Adopting innovative solutions like these can position your business for success and sustainability in the evolving e-commerce landscape.
Weight:
- Unit Wt. (lbs.): 4
Features:
- Print with permanent marker or ballpoint pen directly on mailer surface. Allow time to dry to avoid smearing.
- Labels will adhere to mailer surface once applied with normal pressure.
Size:
- To Choose the Correct Size:
- Determine the width of mailer.
- Width of product + thickness of product + 1/2"
- Determine the length of mailer.
- Length of product + thickness of product + 2"

Dimensions:
- Dimensions in the chart do not include flap.
- Flap: 2"
Material:
- Three layer co-extruded polyethylene.
- Material is water resistant; seal is not.
Shelf Life:
- 1 year if stored between 40° - 100° F.
Recycling:
- Recyclable #4
- Recycled Content:
- Post-consumer: Up to 30%
Specifications:
- Acid free
The Ultimate Guide to Poly Mailers for E-Commerce Success
In the world of e-commerce platforms, delivering products safely and cost-effectively is crucial to success. SupplyLand's Polymailers have emerged as a popular solution for businesses looking to optimize their shipping processes. These lightweight, durable plastic envelopes offer many benefits when shipping a wide range of products.
What Are Poly Mailers?
Poly mailers are plastic, waterproof envelopes made from polyethylene film. This material is a blend of plastic resin, melted down and extruded into a film, then converted into versatile mailers. These envelopes make shipping easy with their self-sealing closure and label-friendly design.
The Benefits of Using Poly Mailers
- Waterproof Protection: Keeps items dry during transit.
- Durability: Resistant to punctures and tears.
- Security: Features secure adhesive closures.
- Privacy: Non-transparent material protects customer privacy.
- Lightweight: Reduces shipping costs.
- Compact Storage: Saves space in your storage area.
- Efficiency: Easy to handle and use for fast-paced shipping environments.
Why should you consider using poly mailers?
Did you know that poly mailers can help reduce your shipping costs? These mailers are much lighter than boxes. Carriers use a lower dimensional weight value to calculate shipping fees. Ultimately, it can save you some bucks while still ensuring your packages reach their destination safely.
What industries use poly mailers?
Poly mailers are most commonly used by e-commerce businesses, online retailers, and medical and pharmaceutical companies.
What types of products are ideal to ship in poly mailers?
Poly mailers are ideal for shipping goods like clothing, bedding, towels, fabrics, footwear, books, accessories, and non-perishable items.
Although poly mailers are versatile, there are some situations when poly mailers are not ideal:
- Shipping fragile items
- Shipping multiple products at the same time
- The product is too large
What is the best way to ship poly mailers?
You can ship poly mailers via USPS, UPS, FedEx, DHL, etc.
Shipping rates will vary depending on the carrier, the distance to ship the product, and the shipping service selected.
Are poly mailers considered envelopes?
Poly mailers are considered non-paper envelopes. Manual handling is required for these items, which cannot be sorted by machines and result in additional charges.
Can you ship poly mailers via USPS?
Yes, poly mailers can be shipped with the US Postal Service. Poly mailers can be shipped using USPS First Class, Priority Mail or Media Mail services.
- First Class – This applies when shipping a package weighing 13 oz. or less. It is the cheapest way to ship items and is best for lightweight items.
- Priority Mail—This service can be used to ship packages weighing up to 70 lbs. It typically delivers packages in 1-3 business days. Shipping charges are calculated based on the distance from the ship point to the destination.
- Media Mail – A cost-effective service shipping books, CDs, DVDs, and other print materials.
What are USPS rules and guidelines for poly mailers?
Poly mailers must be at least 2 mils thick for shipments up to 5 lbs. and at least 3 mils thick for shipments up to 10 lbs.
- The overhang of the poly mailers should not exceed ½” when the package is laying flat.
- First Class Mail can be used for a poly mailer weighing less than 16 oz.
- Priority Mail can be used for any poly mailer weighing under 70 lbs.
- USPS Media mail can be used for any poly mailer weighing under 70 lbs. It can contain digital products, books, DVDs, vinyl records, sound recordings, and printed music.
Are poly mailers recyclable?
Poly mailers can be recycled. You can recycle eco-friendly poly bags at a local grocery store, where most offer a collection bin for plastic grocery bags.
How do you choose the right size poly mailer?
- Measure your items – Fold items and arrange in a manner consistent with how they will be shipped. Use a tape measure or ruler to determine the length, width and height of the item/s. Take note of your measurements.
- Use formulas to determine minimum required mailer dimensions:
- Minimum Width = Item Width + Item Depth + 1”
- Minimum Length = Item Length + Item Depth + 2”
- Thicker fabrics take up more space when packaged. For instance, a knitted wool jumper takes up twice as much space as a long-sleeved cotton t-shirt. Similarly, jeans are bulkier than leggings and fleece stockings take up more space than sheer stockings.
- If you’re still unsure after measuring and considering the thickness of your items, go up one size level to be safe.
What is the best size poly mailer for clothing?
Select sizes that fit customer’s purchase habits, whether buying one or in bulk. Ensure the poly mailers you are considering are durable and weather-proof to protect the customer’s clothing order.
- 7 ½ x 10 1/2” (P510): Socks and underwear.
- 9 x 12” (P511): T-shirts, thin shirts, light undergarments, pajama shorts, mini skirts, and children’s size clothing.
- 10 x 13” (P512): This versatile size is ideal for blouses, dress shirts, shorts, skirts, and more. Up to five large shirts can fit comfortably, depending on the fabric thickness and folding method.
- 12 x 15 ½” (P513): Perfect for thicker and/or longer clothing items, such as sweaters, jeans, dresses, sweatshirts and hoodies, typically up to size large.
- 14 ½ x 19” (P514): This size is suitable for all types of clothing, including shirts, dresses, pants, coats, vests, and more. It is also recommended for larger sizes such as XL and XXL. This size is also recommended for blankets and bedding items.
Can I put a stamp on a poly mailer?
Yes, you can use stamps to ship poly mailers. The amount of stamp postage required to ship the mailer will depend on the size and weight of the filled mailer.
SupplyLand Poly mailers can enhance your e-commerce shipping processes, reduce costs, and create memorable unboxing experiences for customers. Adopting innovative solutions like these can position your business for success and sustainability in the evolving e-commerce landscape.

