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Mil Strengths

2 Mil –

The most popular thickness used for medium weight products like clothing, small parts or food.

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905 Results

3 mil

Protects medium to heavier products.

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713 Results


4 mil

Recommended for heavy products like hardware and tools.

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1098 Results

6 mil

Extra heavy-duty for puncture resistance for heavyweight items like industrial parts, machinery and metal tools.

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639 Results

8 Mil

Offers the ultimate protection and maximum strength for items with sharp edges.

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439 Results

What are Poly Bags used for?

Mostly for shipping and retail sales. Moving into 2023 Poly bags are becoming more and more popular as they are as light weight as  possible which allows for lower shipping costs. As durability continues to increase they can be even better than corrugated boxes especially in terms of water and dirt damage.

What is considered a poly bag?

Any bag made from one of  the two most common poly bag materials, polyethylene and polypropylene. Plastic.

What are the advantages of poly bags?

So many!

  • They can keep product air tight.
  • Keep out dirt.
  • Keep out moisture
  • Lightweight – keeping shipping cost to a minimum
  • Resealable
  • Recyclable
  • Economical – Low Cost
  • Available in many colors
  • Minimum amount of space required to inventory them.


Poly bags, also known as plastic bags, are widely used in shipping due to their ease of use, affordability, and versatility.

Available in a variety of thicknesses, colors, and types, poly bags can accommodate a wide range of shipping needs.

Poly bags come in various thicknesses, typically measured in mils or microns.

Thicker bags offer more durability and protection, with options ranging from 0.5 mil to 6 mil or more. Some commonly used thicknesses in shipping include 2 mil, 4 mil, and 6 mil. The appropriate thickness depends on the size, weight, and fragility of the item being shipped.

Poly bags are available in a variety of colors, with clear and opaque options being the most common.

Clear bags allow for easy identification of the contents and may be required for shipping certain types of items. Opaque bags provide greater privacy and can be useful for shipping confidential or sensitive materials.

There are several types of poly bags available for shipping,  each with their own unique features.

Flat bags are the simplest and most economical option, typically used for shipping lightweight items such as clothing or documents. Sealable poly bags have an adhesive strip that allows for easy closure and added security. Resealable bags feature a zip-lock closure and are ideal for items that may need to be accessed multiple times. Self-sealing bags are similar to sealable bags but have a self-adhesive closure instead of an adhesive strip.

Poly bags can be used to ship a wide range of items, including clothing, documents, books, electronics, and more.

However, they may not be suitable for items that require extra protection or rigidity, such as fragile or irregularly shaped items. In these cases, other packaging materials such as cardboard boxes or bubble wrap may be necessary.

Sealable poly bags are commonly used for shipping items that require extra protection from moisture or dirt, such as electronics or medical equipment.

They can also be useful for separating and organizing small parts or components. Flat bags are often used for shipping clothing or other soft materials, as well as documents, flyers, or promotional materials.

Resealable poly bags are a versatile option that can be used for a variety of items, from food and snacks to electronics and office supplies.

They can also be useful for storing and organizing items in a workspace or home.

Poly bags are a convenient and cost-effective option for shipping, but it is important to use them correctly to avoid damage or loss of the contents.

When using bags for shipping, it is important to choose an appropriate thickness and type based on the size and fragility of the item being shipped. It is also important to ensure that the bag is properly labeled and securely sealed to prevent damage or loss during transit.

In addition, it is important to consider environmental impact when using poly bags for shipping.

While they are convenient and affordable, they are not an environmentally friendly option as they can take hundreds of years to decompose in landfills. Businesses and individuals can consider alternative packaging materials, such as biodegradable or reusable bags, to reduce their environmental impact.

In conclusion, poly bags are a versatile and widely used option for shipping, with a range of sizes, thicknesses, colors, and types available to suit various needs.

They can be used to ship a wide range of items, from clothing and documents to electronics and small parts. Proper use, including choosing an appropriate thickness and type and ensuring proper labelling and secure sealing, is important to prevent damage or loss during transit. However, it is important to also consider environmental impact and consider alternatives to plastic bags where possible.

For shopping and packaging

Poly bags, also known as plastic bags, are widely used for shopping and packaging due to their affordable cost, durability, and convenience. However, their widespread use has raised concerns about their environmental impact and has led to calls for alternative packaging materials.

The primary material used is polyethylene, a petroleum-based plastic.

The production of polyethylene involves the extraction of fossil fuels, which contributes to greenhouse gas emissions and environmental degradation. Additionally, they have a low recycling rate and can take hundreds of years to decompose in landfills.

In response to these concerns, some countries and cities have implemented regulations to limit the use of poly bags.

For example, many jurisdictions have implemented fees for single-use plastic bags, while others have banned them outright in favor of reusable bags or other types of packaging.

Despite these efforts, they remain a popular choice for shopping and packaging in many parts of the world.

They are widely used in the retail industry, particularly in grocery stores and other businesses that require packaging for a wide range of products.

One reason for the enduring popularity of poly bags is their affordability.

They are relatively inexpensive to produce, which makes them an attractive option for businesses that need to maintain tight profit margins. Additionally, poly bags are durable and can withstand a great deal of wear and tear, which makes them ideal for high-volume use.

However, as awareness of the environmental impact  grows, some businesses are beginning to explore alternatives.

One promising option is the use of biodegradable bags, which are designed to break down into harmless substances when exposed to the natural environment.

Another alternative is the use of reusable bags, which can be made from a variety of materials such as cotton, hemp, or bamboo.

These bags are more durable than poly bags and can be used multiple times, reducing the need for single-use packaging.

In addition to their environmental impact, poly bags also have some drawbacks from a practical standpoint.

For example, they can be difficult to store and transport due to their lightweight and flimsy nature. Additionally, many consumers find them difficult to open and handle, particularly if they have a lot of items to carry.

Overall, while poly bags remain a popular choice for shopping and packaging, they are not without their drawbacks. 

As awareness of the environmental impact of plastic bags grows, it is likely that more businesses and consumers will look for alternatives. By exploring new packaging options, we can reduce our impact on the environment while still meeting our needs for convenient, affordable, and durable packaging.