Understanding GSM: Complete Guide to Paper Bag Thickness
GSM (Grams per Square Meter) is the single most important specification when ordering paper bags. It determines the bag's strength, feel, and suitability for your products. This guide will help you choose the right GSM for your needs.
What is GSM?
GSM measures how much one square meter of paper weighs in grams. A 200 GSM paper weighs 200 grams per square meter. Higher GSM means thicker, heavier, and generally stronger paper. It's the standard measurement used worldwide in the paper industry.
GSM Ranges Explained
100-130 GSM
LightThickness: Thin, flexible
Strength: Low
Cost: Most economical
Best For:
- Lightweight items
- Bread & bakery
- Small accessories
- Promotional giveaways
Examples: Bakery bags, pharmacy bags
140-160 GSM
Medium-LightThickness: Moderate flexibility
Strength: Medium
Cost: Budget-friendly
Best For:
- Clothing
- Light retail items
- Documents
- Cosmetics
Examples: General retail, clothing stores
170-200 GSM
MediumThickness: Firm, structured
Strength: Good
Cost: Moderate
Best For:
- Most retail items
- Medium weight products
- Gift bags
- Branded packaging
Examples: Boutiques, gift shops, jewelry
210-250 GSM
Medium-HeavyThickness: Rigid, premium feel
Strength: High
Cost: Premium
Best For:
- Premium products
- Multiple items
- Wine bottles (with support)
- Luxury retail
Examples: High-end boutiques, luxury brands
270-300 GSM
HeavyThickness: Very rigid, cardboard-like
Strength: Very High
Cost: Highest
Best For:
- Heavy items
- Wine & bottles
- Electronics
- Luxury gifts
- Brand boxes
Examples: Luxury retail, electronics, wine shops
Quick Reference by Product Type
| Product Type | Recommended GSM | Why |
|---|---|---|
| Jewelry & Accessories | 180-200 GSM | Premium feel, light items |
| Clothing & Apparel | 140-160 GSM | Light to moderate weight |
| Food & Bakery | 120-140 GSM | Light items, cost-effective |
| Wine & Bottles | 270-300 GSM | Heavy, needs rigid support |
| Electronics | 220-250 GSM | Heavy, needs protection |
| Cosmetics & Beauty | 180-220 GSM | Premium perception |
| Gifts & Premium Items | 200-250 GSM | Luxury feel, durability |
| Grocery & General | 160-180 GSM | Balance of strength & cost |
Frequently Asked Questions
What does GSM stand for?
GSM stands for 'Grams per Square Meter'. It measures the weight of paper per square meter, which directly correlates to thickness and strength. Higher GSM = thicker, stronger paper.
How do I know what GSM I need?
Consider what you're putting in the bag. Light items (under 500g) work with 120-150 GSM. Medium items (500g-2kg) need 160-200 GSM. Heavy items (over 2kg) require 220+ GSM.
Does higher GSM always mean better quality?
Not necessarily. Higher GSM means stronger and more rigid, but that's not always needed. Over-specifying GSM increases costs unnecessarily. Match GSM to your actual product weight.
What's the most popular GSM for retail?
160-180 GSM is the most commonly used range for general retail. It offers good strength, print quality, and value for money. This is our best-selling specification at EcoBagsFactory.
Can I mix different GSMs in one order?
Yes! Many businesses order different GSMs for different products. Small accessories might use 140 GSM while premium items use 220 GSM bags. Contact us for mixed orders.
Pro Tips from EcoBagsFactory
- Always order samples first to feel the actual thickness before bulk ordering
- Factor in lamination - it adds strength, so you might need lower base GSM
- Consider handle type - thread handles work better with higher GSM for strength
- Premium finishes (foiling, spot UV) are better visible on 200+ GSM paper