Non Woven Bag GSM Guide Singapore — How to Choose the Right Fabric Weight

If you have ever ordered custom non woven bags in Singapore, you have probably come across the term “GSM” and wondered what number to pick. GSM — short for Grams per Square Metre — is the single most important specification that determines how your bag will look, feel, and perform. Get it right and your promotional non woven bags become walking billboards that people genuinely reuse. Get it wrong and you end up with flimsy pouches that tear before the event is over.

In this guide, Aquaholic Gifts breaks down every GSM tier available in the Singapore market, explains exactly when to use each one, and shares practical tips so you can order custom printed non woven bags with confidence — whether for a trade show, corporate gift set, or brand giveaway campaign.

What Does GSM Mean for Non Woven Bags?

GSM stands for Grams per Square Metre. It measures how much one square metre of the fabric weighs. The higher the GSM number, the thicker, heavier, and more durable the non woven polypropylene material will be.

Think of GSM like paper weight. Photocopy paper is roughly 80 GSM — it is sturdy enough for everyday printing but you can still bend it easily. Card stock is 200+ GSM — noticeably thicker and rigid. Non woven bag fabric follows the same logic, just with polypropylene fibres instead of wood pulp.

Most custom non woven bags in Singapore fall between 40 GSM and 120 GSM. That range covers everything from thin dust-cover pouches to heavy-duty reusable grocery totes. Knowing where your project sits on that spectrum is the first step to making a smart procurement decision.

Why Fabric Weight Matters in Singapore

Singapore’s tropical climate, compact urban lifestyle, and strong corporate gifting culture create a unique set of requirements for non woven bag printing and fabric selection.

Humidity and Heat Resistance

Singapore’s average humidity hovers around 80 percent year-round. Bags that are too thin can feel clammy and limp when exposed to moisture. A slightly higher GSM fabric resists humidity better and keeps its shape, which is why most suppliers here recommend at least 70–80 GSM for bags that will be carried outdoors.

Brand Perception

In the corporate gifting space, the tactile quality of your giveaway reflects directly on your brand. A flimsy bag with a beautiful logo still leaves a mediocre impression. Choosing the right GSM ensures your promotional non woven bags feel intentional and premium, not disposable.

Reusability and Sustainability

Singapore’s growing emphasis on reducing single-use plastic means that reusable bags are more valued than ever. A higher-GSM non woven bag that survives dozens of uses delivers more brand impressions per dollar than a thin bag used once and discarded. It also aligns your brand with eco-conscious values — something increasingly important for businesses operating in Southeast Asia.

GSM Breakdown: 40 GSM to 120 GSM Compared

Below is a detailed look at each GSM tier so you can match fabric weight to your specific use case. Whether you are sourcing for a large-scale event or a curated branded merchandise set, understanding these tiers will save you time and money.

40 GSM — Ultra-Lightweight

At 40 GSM, the fabric is almost see-through. It works for protective wrapping — such as shoe bags inside a shoebox or garment covers — but is not durable enough for carrying items. Print quality is limited at this weight because the surface lacks stability. Most Singapore businesses skip this tier for promotional purposes.

60 GSM — Lightweight

This is the entry point for usable custom printed non woven bags. At 60 GSM, the fabric is opaque and can carry brochures, catalogues, and lightweight promotional items. It is the go-to for high-volume events where you need thousands of bags at the lowest possible unit cost. The trade-off is that these bags will not withstand heavy use — plan for them to be used a handful of times before they show wear.

70 GSM — Standard Lightweight

70 GSM sits in a sweet spot between economy and function. It is sturdy enough that recipients will use it beyond the event — perhaps for a gym run or a quick grocery trip. Silkscreen printing works well at this weight, delivering clean logos and text. Many Singapore businesses choose this for mid-budget corporate events and seminars.

80 GSM — The Industry Standard

This is the most popular GSM in the Singapore market — and for good reason. 80 GSM non woven fabric strikes the ideal balance of cost, durability, print quality, and hand-feel. It is thick enough to look and feel premium without breaking the budget. The fabric surface is smooth and stable, which means non woven bag printing — whether silkscreen, heat transfer, or UV — produces crisp, vibrant results.

If you are unsure which GSM to choose for your custom non woven bag order, 80 GSM is almost always a safe and reliable default.

90 GSM — Premium Mid-Range

90 GSM is for brands that want to make a statement. The fabric feels substantial in your hand and maintains its shape even when empty. This GSM is often chosen for custom printed non woven bags that double as gift packaging for corporate events or product launches. The slight rigidity gives the bag a structured, almost box-like profile that looks polished on a display table.

100–120 GSM — Heavy-Duty

At 100 GSM and above, non woven fabric approaches the heft of woven canvas. These bags can carry heavy items like wine bottles, books, or groceries without stretching or tearing. They are the most expensive per unit but also the most durable and reusable — often lasting for years. For brands that want their promotional non woven bags to be kept and used long-term, this is the tier to invest in.

Quick-Reference GSM Comparison Table

Use this table as a quick cheat sheet when discussing options with your supplier or procurement team.

How to Choose the Right GSM for Your Needs

Selecting the right fabric weight comes down to balancing four factors. Here is a straightforward decision framework that works for most Singapore businesses.

Step 1: Define the Purpose

Ask what the bag will carry and how often it will be used. A one-time exhibition giveaway holding brochures has very different requirements from a grocery tote designed for weekly reuse. If you are building a custom non woven bag for promotional use, define whether it is a high-volume, low-touch item or a low-volume, high-impact piece.

Step 2: Set Your Budget

Higher GSM means more raw material per bag, which directly increases cost. As a rough guide, moving from 60 GSM to 80 GSM typically adds 15–25 percent to the unit price. Jumping from 80 GSM to 100 GSM can add another 20–30 percent. Factor in your total order quantity — bulk orders often offset the per-unit price increase.

Step 3: Consider the Load

Light items like flyers and small gifts work fine at 60–70 GSM. Heavier items such as water bottles, books, or product samples need 80 GSM minimum. For wine bottles or anything above 3 kg, go with 100+ GSM to avoid handle stress and base tearing.

Step 4: Factor in Printing Complexity

Simple one-colour logos print well on any GSM above 60. However, if your design involves full-colour artwork, gradients, or detailed imagery, you will need at least 80 GSM for a smooth, stable surface that reproduces fine details. Discuss your artwork with your supplier early — it may influence the ideal GSM choice.

How GSM Affects Non Woven Bag Printing

Fabric weight and print quality are directly connected. Here is how different GSM ranges interact with the most common printing methods used in Singapore for non woven bag printing.

Silkscreen Printing

The most popular method for non woven bags. Ink is pressed through a mesh stencil onto the fabric. Works well from 60 GSM upward, but 80+ GSM produces noticeably sharper edges because the firmer surface does not flex under the squeegee. Ideal for one to three colour designs with bold graphics.

Heat Transfer Printing

A printed transfer is applied to the bag using heat and pressure. This method handles full-colour artwork, photographic images, and gradients. At lower GSM (below 70), the thin fabric can warp slightly under heat. 80 GSM and above gives the best results — flat, consistent colour transfer with no distortion.

UV Printing

UV-cured inks are jetted directly onto the fabric and cured instantly with ultraviolet light. This method excels at reproducing fine details and vibrant colours. It requires a smooth, stable surface — 80 GSM minimum is recommended. For an in-depth comparison of these methods, check out our printing methods guide.

Woven Bags vs Non Woven Bags: A Quick Comparison

Buyers in Singapore sometimes confuse woven bags with non woven bags. The names sound similar but the products are fundamentally different.

Woven bags are made by interlacing threads on a loom, creating a visible crosshatch texture similar to canvas or cotton. They are heavier, more rigid, and typically more expensive. Non woven bags are made from polypropylene fibres that are bonded together through heat or pressure — no weaving involved. The result is a smooth, felt-like fabric that is lighter, more cost-effective, and faster to manufacture in large quantities.

For a deep dive into how these materials stack up, including canvas and jute options, read our comparison of jute, canvas, and non woven bags or our focused guide on woven bags vs non woven bags.

Sustainability and Eco-Friendly Considerations

Non woven polypropylene bags are recyclable (resin code 5) and reusable, making them a significantly better environmental option than single-use plastic bags. However, the GSM you select directly impacts the sustainability profile of your order.

Higher GSM = Fewer Replacements

A 100 GSM bag that lasts for two years of regular use is arguably more eco-friendly than three 60 GSM bags used sequentially over the same period. When calculating the environmental footprint, factor in the total lifecycle — not just the material per bag.

Material Sourcing

If sustainability is a core brand value, you may also want to explore alternative eco-bag materials. Our customised bag material guide covers cotton, jute, rPET, and other options alongside non woven polypropylene so you can make a well-informed choice.

Common Mistakes When Selecting GSM

Mistake 1: Choosing the cheapest GSM for heavy items. Bags rated at 60 GSM will stretch, sag, or tear when loaded with heavy products. Always match GSM to expected load weight — not to the tightest budget line.

Mistake 2: Over-specifying GSM for single-use giveaways. Spending on 100 GSM bags for a one-day event where recipients just carry a brochure home is overkill. 60–70 GSM does the job at a fraction of the cost.

Mistake 3: Ignoring the print method compatibility. Ordering low-GSM bags with complex full-colour artwork leads to disappointing print results. Consult your printer or supplier about GSM-to-print-method compatibility before finalising artwork.

Mistake 4: Not requesting physical samples. GSM numbers are useful but nothing replaces touching the actual fabric. Always request samples at your shortlisted GSM options before committing to a large order. Reputable suppliers like Aquaholic Gifts are happy to provide physical samples for comparison.

Mistake 5: Confusing non woven GSM with paper GSM. 80 GSM in non woven fabric feels completely different from 80 GSM paper. Polypropylene is inherently stronger and more flexible than paper at the same GSM, so do not let the number mislead you — feel the sample.

Frequently Asked Questions