Aug 1, 2026Blog
120gsm vs 180gsm Kraft Paper Bags: How to Choose the Right GSM
Not sure whether to choose 120gsm or 180gsm kraft paper bags? Learn how paper weight affects pricing, strength, shipping costs, and why specifying GSM helps you receive accurate quotations.
How to Choose the Right GSM for Kraft Paper Bags (And Why It Matters When Requesting a Quote)
Introduction
If you've ever requested a quotation for custom kraft paper bags, you've probably noticed something confusing.
You send the same inquiry to three suppliers.
A few days later, you receive three completely different prices.
Naturally, you wonder:
Why is there such a big difference?
In many cases, the answer isn't the supplier.
It's the paper weight (GSM).
When buyers don't specify the paper weight, suppliers often make their own assumptions. One supplier may quote 120gsm, while another may quote 180gsm. Although the bags may look similar in a quotation, they are different products with different material costs, carrying strength, and shipping weights.
Without confirming the GSM, it's almost impossible to compare quotations fairly.
What Does GSM Mean?
GSM stands for grams per square meter.
Simply put, the higher the GSM:
- Thicker paper
- Stronger bags
- Higher material costs
- Heavier shipping weight
Choosing the right GSM isn't about selecting the thickest paper—it's about selecting the most suitable paper for your product.
120gsm Kraft Paper Bags
120gsm is one of the most commonly used paper weights for retail shopping bags.
It is suitable for:
- Clothing
- T-shirts
- Cosmetics
- Accessories
- Lightweight gifts
Advantages
- Lower material cost
- Lower shipping weight
- Cost-effective for large quantities
- Suitable for everyday retail packaging
If your products are relatively light, 120gsm usually provides enough strength while keeping the overall packaging cost under control.
180gsm Kraft Paper Bags
180gsm offers a more premium feel and higher carrying strength.
It is commonly used for:
- Luxury gift bags
- Shoes
- Wine bottles
- Heavy products
- Premium retail packaging
Advantages
- Better rigidity
- More premium appearance
- Higher carrying capacity
- Better performance for larger bags
However, higher GSM also means:
- Higher paper consumption
- Higher unit price
- Higher shipping costs
120gsm vs. 180gsm: Which One Is Right for You?
Feature | 120gsm | 180gsm |
|---|---|---|
Paper Thickness | Standard | Thick |
Carrying Strength | Medium | High |
Material Cost | Lower | Higher |
Shipping Weight | Lower | Higher |
Premium Appearance | Good | Excellent |
Best For | Clothing, cosmetics, gifts | Shoes, wine, luxury products |
Why Not Specifying GSM Makes Quoting Difficult
One situation we encounter regularly is receiving inquiries that simply say:
"Please quote custom kraft paper bags."
Unfortunately, this doesn't provide enough information for an accurate quotation.
Without knowing the paper weight, suppliers have to make assumptions.
Some suppliers quote 120gsm to keep the price competitive.
Others quote 180gsm to ensure sufficient strength.
Both quotations may be technically correct—but they are not based on the same specifications.
As a result, buyers often compare prices that aren't directly comparable.
In many cases, suppliers will also quote a higher GSM to reduce the risk of complaints about bag strength. While this approach is understandable, it usually results in:
- Higher unit prices
- Higher shipping costs
- More expensive packaging than the project actually requires
For buyers, this means paying more simply because the specification wasn't clearly defined.
Choosing a Higher GSM Isn't Always Better
Many buyers assume thicker paper automatically means better quality.
In reality, that's not always true.
If your products only weigh a few hundred grams, choosing 180gsm may simply increase:
- Material costs
- Freight costs
- Warehouse costs
without providing any meaningful benefit.
The right GSM depends on what the bag needs to carry, not on selecting the highest specification available.
Tell Your Supplier More Than Just the Bag Size
To receive an accurate quotation, it's helpful to provide more than the dimensions.
Consider including:
- Bag size
- Product weight
- Estimated carrying weight
- White kraft or brown kraft paper
- Handle type
- Printing colors
- Surface finishing (if required)
The more complete the information, the more accurate—and comparable—the quotations will be.
Our Recommendation
If you're unsure whether 120gsm or 180gsm is the better choice, don't guess.
Tell your supplier:
- What product the bag will carry
- Approximately how much it weighs
- Your target market
- Your budget
- Your brand positioning
An experienced kraft paper bag manufacturer should recommend the most suitable paper weight based on your application—not simply quote the thickest or cheapest option.
The goal isn't to sell more paper.
It's to provide the right packaging solution at the right cost.
Need Help Choosing the Right GSM?
Not sure whether 120gsm or 180gsm is the right choice for your project?
Our packaging specialists can recommend the most suitable paper weight based on your product, bag size, budget, and shipping requirements.