Mar 22 2022
What Size Poly Mailer Bags Do I Need? China Supplier

What Size Poly Mailers Do I Need?

Whether you have years of experience packaging retail shipping mailer envelopes or you’ve just started your own e-commerce business and need to purchase poly mailer envelopes for the first time, it can be hard to know what size shipping mailer to use for different items. This blog will help give you a general idea of what size poly mailer you need, as well as tips and tricks for making the most of your shipping experiences!
It’s What’s Inside the Mailer That Counts 
How many times have you wondered if something you’re trying to mail would fit into a shipping mailer only to try and find that your poly mailer is slightly too small? Poly mailer envelopes are great for shipping softer items such as clothing, fabric, stuffed animals, and bedding, as well as smaller electronics, shoes, and even jewelry. Poly mailer envelopes are designed to be flexible, lightweight, and durable enough to resist tears, punctures, and damage from debris, moisture, and dirt.
However, a shipping mailer that’s over or under-filled can make a big difference in whether or not the item arrives safely at its destination. An under-filled poly mailer, or one that is too large for the things it contains, means that parts of the poly mailer are unfilled, increasing the likelihood of it being snagged or caught during processing and sorting by USPS and other carriers. An over-filled poly mailer, or one that is too small for the items it contains, increases the likelihood that it will rip, tear, or bust open during transit. If your goal is for the items in your package to arrive safely and undamaged, it’s in your best interest to use the correct size poly mailer.
 White poly mailer with thank you printed in black.  Yellow bars surround the word thank you.
Polymailer Size Matters
However, determining what type and size shipping mailer to use can feel like a guessing game. How do you know what is under-filled or over-filled? Here are a few tips and tricks to know whether or not you have the right size poly mailer for your needs.
Measure your product: Although this sounds like an obvious one, knowing the exact dimensions of the item you’re mailing can help determine whether you need to size up or down, or if you’ve found the best mailer. It is always easier to add additional packaging material, such as crumpled paper or packing peanuts to an under-filled poly mailer. It’s nearly impossible to make an item fit in something that isn’t large enough to hold it.
Account for packaging: If your item is delicate or you want to add additional padding to be on the safe side, make sure to consider that when purchasing poly mailer envelopes.
Know your shipping mailer dimensions: Poly mailer suppliers can choose to list interior or exterior measurements of their bags. It’s essential to know which measurements you’re reading so you can measure your item correctly.
General Estimates
Still a bit nervous? Thankfully, there are a few rough estimates to refer to when shipping items of clothing.
6 x 9 inches: Great for socks and tiny jewelry boxes.
7.5 x 10.5 inches: Can fit a tea towel, socks, and slightly larger jewelry boxes, and small electronics.
9 x 12 inches: Can accommodate fabric patterns or one to two t-shirts.
10 x 13 inches: Fits four to five large t-shirts, a set of napkins, a dress shirt, or one yard of fabric.
12 x 15.5 inches: Can fit one sweater, dress, pair of jeans, two yards of fabric, yarn, or four to five large t-shirts.
14.5 x 19 inches: Can fit 12 to 14 medium t-shirts, 10 to 12 large t-shirts, two to three sweaters or dresses, two pairs of jeans, a set of sheets, or three yards of fabric.
19 x 24 inches: Can fit a set of sheets, 12 to 14 large t-shirts, two to three sweaters or dresses, or two pairs of jeans.
Whether you’re mailing hundreds of t-shirts each day or 100 each month, having the right size poly mailer is essential. Want to send your products in something a little more festive?  Our design poly mailers are perfect for eliciting excitement when your customers open their mailbox.
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Nov 5 2020
Some Clients Comments About Our Products

Quality is the cornerstone of Ruihon Packaging Limited; from the product development to shipment, our professional team and perfect precision tools are there every step of the way to ensure the highest quality and reliability of products. Our goal is to provide customers stable products.

Here is some clients Comments About Our Products.

(1) USA client

comments of poly mailers

(2)Australia Client

(3)Australia Client

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Jun 4 2020
The difference between Biodegradable & Common Poly Mailers

With the development of economy and society, plastic packaging is polluting the environment more and more, which affects the survival and development of human beings. Therefore, for the past ten years, scientists have been committed to researching more environmentally friendly materials that can replace plastics. Now our company Several courier bags made of fully biodegradable materials have been launched. What is the difference between biodegradable courier bags and ordinary courier bags, today I will explain to you:

1. Material difference: The main components of biodegradable mailing bags are PLA and PBAT, as well as some starch or calcium carbonate components. These materials are harmless to the environment and can be directly degraded into water and carbon dioxide in a certain environment, so it can Treat directly as compost material. The main component of ordinary express bags is polyethylene plastic. If they are used up and can be recycled and reused, they will not pollute the environment. However, they cannot be degraded for decades if they are directly treated as garbage and landfilled without recycling. , Even incineration will produce harmful gases, so in terms of environmental protection, biodegradable express bags are the future development direction.

2. Price difference: The cost difference between biodegradable materials and plastic polyethylene is still relatively large. The raw materials on the market for biodegradable materials are currently about 25,000 yuan/ton, while the cost of plastic polyethylene is currently 9,000 yuan/ton, so it is cost-effective The cost of ordinary express bags is lower.

3. Performance difference: After more than ten years of development, the physical properties of biodegradable materials have gradually improved, and they have reached 80% of the physical properties of traditional plastics. They can basically be used in various application scenarios. Currently, Post, Tmall, and JD. The large-scale promotion of biodegradable express bags has begun.
Although the cost of biodegradable express bags is about 3 times higher than that of ordinary express bags, the production process and technology are basically mature, and they are environmentally friendly, reducing the pollution of air and soil in the environment, so biodegradable express bags will become the future The most important development direction of express packaging.

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May 4 2019
4 types of poly mailers

4 types of poly mailers

There are several types of poly mailers available, and the type you use will depend on your goal(s), whether that’s to save money, showcase your brand, be eco-friendly, or play it safe and add more protection.

Regular white poly mailers
These standard plastic poly mailers have no bubble padding. They are your most cost-effective option and best suited for products that don’t need more cushion like bubble wrap. They cover the product and don’t offer much protection.

Bubble padded
These poly mailers come bubble-padded on the inside to provide extra security for any high-quality products that require it or for those that you are worried could get scratched.

Expansion poly mailers
These are your heavy duty poly mailers, made from strong polyethylene and designed to protect products from moisture during shipping. They are puncture, moisture, tamper, and tear-resistant and feature padded bottoms to allow for thicker items.

Eco-friendly options
Eco-friendly poly mailers include biodegradable and recycled options. For eco-conscious brands, these are the poly mailers to use as they minimize waste, maximize the use of renewable energy during production, and are safe for both consumers and the environment throughout its lifecycle.

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Sep 4 2017
Which types of ecommerce products can be shipped with poly mailers?

Poly mailers are a good option for any products that can’t be crushed like apparel or fabric, or useful for products that are already in sturdy packaging like shoes that you don’t think will stay sealed while in transit. If it passes the test of ‘Will this product be okay if a carrier throws the poly bag into a pile that gets heavy boxes tossed on top of it?’ then you can use a poly mailer.

Poly mailers should never be used for fragile items like sunglasses, foods such as chips that can be smashed and crumbled, and products made out of glass. Unless these products are already in sturdy packaging, stick to boxes.

Apparel
Poly mailers are great for apparel because it’s hard to crush clothing. When fulfilling apparel orders, you want to use poly mailers for products like jeans, shirts, or footwear that aren’t at risk of being crushed while in transit. However, if you sell dresses with intricate beading or ornaments on them, they’re better suited for boxes.

Cloth and fabric-based products
Like apparel, most products made of cloth, cotton, or any type of fabric are good candidates for poly mailers. Ideal products include swatches, yarn, face masks, and bedding products like sheet sets.

Books and printed media
Books are a good option for poly mailers as they’re often already sturdy. A bubble-lined poly mailer can provide the extra security needed to prevent rips and dents in the book when shipping books with a poly mailer.

Some health, beauty, and wellness products
Fulfillment for health, beauty and wellness products can be done in both boxes and mailers, but it’s ultimately dependent on the product’s packaging and materials.

Liquid products like face wash and products in glass aren’t good for poly mailers, but shipping vitamins and supplements, nutrition products, and cosmetics (e.g., shipping makeup like a tube of mascara, liquid eyeliner, or lipstick) may be done in poly mailers so long as the they are sealed tight and already encased in materials that won’t break when dropped or thrown.

Anything else in strong, sturdy product packaging or that’s soft and flat or not easily crushed
One of the reasons brands use poly mailers is to ship products that are already in sturdy packaging. It’s often overkill to ship products in cardboard boxes if the product is already packaged in cardboard.

Other examples of sturdy packaged products include:

A deck of playing cards
Smaller board games
Phone cases

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Jun 6 2015
Poly mailers vs. boxes: why should I use poly mailers?

Boxes are a staple for shipping, but they can be unnecessary for shipping certain products. For example, shoes are often packaged in strong cardboard boxes, so shipping them inside another cardboard box wouldn’t make sense.

Apparel is also a great option for poly mailers as clothing isn’t susceptible to being crushed or broken without a box. Here are a few reasons why you might consider using a poly mailer instead of a box.

Significantly cheaper shipping costs
While corrugated boxes are sturdy, cheap, and resistant to damage, poly mailers provide protection while reducing shipping costs. Due to their light weight and small size, poly mailers cost less per shipments when compared to boxes.

One major factor in the pricing of shipments is dimensional weight, a pricing technique used by shipping carriers where they charge whichever number is greater: the actual weight of the package or its calculated dimensional weight.

This way, carriers can charge more money for a lightweight package that takes up a lot of room on the truck. They also have surcharges for heavyweight shipments, so keeping packages small and light is in any ecommerce company’s best interest.

Poly mailers take up less space than boxes, so they help reduce dimensional weight to help you save even more on shipping costs. The more shipments that go out in a box that could go out safely in a poly mailer, the more shipping costs will eat into your margin over time.

Smaller and lighter
Since poly mailers are made out of plastic, they’re much easier to store from a warehousing standpoint. Their small size also means they take up less space in carrier’s vehicles, so you pay less for shipping too.

When it comes to delivery, poly mailers can sometimes fit in a mailbox, which reduces the chance of theft as compared to a package that’s sitting on a porch.

Custom branding options
Custom packaging that uses your branding helps your shipments stand out. Like boxes, poly mailers can include your logo, colors, and imagery if you desire a sleek look.

Boie’s noissue compostable bags that ShipBob shipsEco-friendly options
While you might think plastic poly bags are a terrible option for the environment, there are many packaging companies that provide eco-friendly packaging options for poly mailers.

If your brand foundation is built on an environmental-conscious mission, it wouldn’t look suitable for your brand to use standard plastic mailers. You can use everything from recycled poly mailers to biodegradable poly mailers like ShipBob customer Boie does (picture to the right).

eco-friendly packaging

Opt for a little extra padding
Shipping damages are an unfortunate reality that can be prevented in many cases. Some poly bags come with a bubble-lined interior to maximize security. These bubble mailers provide an extra layer of protection for products, though they won’t fully protect fragile items, they can be a good alternative if you’re worried regular poly mailers may damage certain items.

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Nov 4 2014
What are poly mailers?

Poly mailers. Bubble mailers. Poly bags. Plastic bags. Mailing bags.

Whatever you call them, they have gained a lot of popularity in the ecommerce shipping world.

Choosing the right packaging for shipments will determine everything from shipping costs to whether products arrive safely at the customer’s doorstep.

If you’re paying too much for shipping, you may never get a positive return on your customer acquisition cost. If a customer orders from you and they realize a product is damaged during the unboxing experience, they may never order from you again.

While you may associate cardboard boxes with online shopping, many orders don’t come in a box at all.

Poly mailers are a common packaging option because they can protect certain products at a lower cost than corrugated cardboard packaging.

Poly mailers are lightweight but sturdy plastic bags designed to ship products. They have a self-sealing foldover lip so no tape is needed, and a shipping label can be directly affixed on the bag. They are thin, yet durable so they don’t take up much space on a truck while in transit.

Poly mailers come in many sizes and styles with some being padded with bubble wrap so they don’t require additional dunnage like many boxes require to hold items in place to prevent shipping damages.

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