Complete Guide to Vest Bags: Materials, Sizes, Prices & Selection Tips
Vest bags (also known as T-shirt bags or carrier bags) are the most common type of plastic bag used across Taiwan and throughout Asia. From supermarket checkouts to traditional markets, breakfast shops to night market vendors, vest bags are everywhere. This guide covers everything you need to know about selecting the right vest bags for your business.
What Are Vest Bags?
Vest bags get their name from their shape, which resembles a vest or T-shirt. They feature two carry handles (ears) at the top, making them easy for customers to grab and carry. The main structure includes three parts: the bag opening (handle area), the body (main storage space), and the sealed bottom.
At CHIN TZON Plastics, we have manufactured vest bags for nearly 50 years, serving businesses across all industries in Taiwan with factory-direct pricing.
Vest Bag Materials: HDPE vs LDPE
Material selection is one of the most critical decisions when purchasing vest bags. The two most common materials are HDPE (High-Density Polyethylene) and LDPE (Low-Density Polyethylene).
HDPE Vest Bags
HDPE vest bags are the most widely used type, featuring:
- Stiffer texture: Produces a rustling sound when handled
- Lower transparency: Semi-transparent or frosted appearance
- Better heat resistance: Can withstand higher food temperatures
- Lower cost: More economical at the same thickness
- Higher tensile strength: Stronger at equivalent thickness
Supermarkets, traditional markets, and convenience stores predominantly use HDPE bags.
LDPE Vest Bags
LDPE vest bags offer a distinctly different feel:
- Soft and smooth: Pleasant tactile quality
- Higher transparency: Better product visibility
- Excellent stretch: More puncture resistant
- Better print quality: Smoother surface for printing
- Higher cost: Premium material price
Boutiques, fashion retailers, and gift shops typically prefer LDPE for its premium feel.
Material Selection Guide
| Factor | Choose HDPE | Choose LDPE | |--------|------------|------------| | Budget | Cost-sensitive, high volume | Quality-first, lower volume | | Contents | General food, produce, dry goods | Angular items, clothing | | Brand image | Everyday retail | Premium brand stores | | Printing needs | Simple 1-2 color | Detailed multi-color |
Common Vest Bag Sizes
Vest bag dimensions are expressed as "Width x Length (body)" in centimeters.
Small (0.5-1 kg capacity)
- Size range: Width 15-20cm x Length 30-38cm
- Uses: Breakfast takeaway, small food items, fruit portions
- Common users: Breakfast shops, beverage stores, fruit stands
Medium (2-3 kg capacity)
- Size range: Width 22-28cm x Length 40-50cm
- Uses: Lunch box takeaway, general shopping, vegetable packaging
- Common users: Bento shops, food stalls, supermarkets
Large (5 kg capacity)
- Size range: Width 30-35cm x Length 50-60cm
- Uses: Bulk shopping, market purchases, larger items
- Common users: Traditional markets, wholesale stores
Extra Large (10+ kg capacity)
- Size range: Width 36cm+ x Length 60cm+
- Uses: Bulk produce, clothing bundles, moving supplies
- Common users: Wholesale markets, recycling centers
CHIN TZON Plastics offers the full range of vest bag sizes with custom sizing available. Minimum order quantities available upon request, with 15-20 day delivery.
Thickness Selection Guide
Vest bag thickness is measured in "mil" units, where 1 mil = 0.01mm. Common thicknesses range from 2 mil (0.02mm) to 8 mil (0.08mm).
Thin (2-3 mil)
Suitable for lightweight items like bread and pastries. Lowest cost, ideal for high-volume consumption. Not recommended for items over 500g.
Standard (4-5 mil)
The most common thickness for everyday use. Handles general produce and food items well, balancing durability and cost. Most food service and retail businesses choose this range.
Heavy-Duty (6-8 mil)
For heavier items or situations requiring extra strength, such as fruit, frozen food, or soup containers. Higher per-unit cost but better customer experience and lower bag failure rate.
Pricing Factors
Vest bag pricing depends on several factors:
Raw Material Prices
PE resin prices fluctuate with international oil prices, typically accounting for 60-70% of total cost.
Size and Thickness
Larger and thicker bags use more material. A medium bag at 6 mil can cost 30-50% more than the same bag at 4 mil.
Order Volume
Bulk ordering is the foundation of the plastic bag industry. Larger orders mean better per-unit pricing. We recommend establishing long-term supply relationships for the best pricing stability.
Custom Printing
Plain bags are cheapest. Adding custom printing increases cost based on number of colors (1-3 available), print area, and plate fees. Plate fees are one-time costs for first orders; reorders use existing plates at no extra charge.
Why Choose CHIN TZON Plastics?
CHIN TZON Plastics is a professional plastic bag manufacturer based in Chiayi, Taiwan, with nearly 50 years of manufacturing experience:
- Factory direct: No middleman markup
- Full customization: Size, thickness, material, and printing
- 1-3 color printing: Professional logo printing services
- Nationwide delivery: Shipping throughout Taiwan
- Flexible MOQ: Contact us for minimum order details
We also manufacture hole punch bags and flat bags for all your packaging needs.
Contact Us
Whatever vest bag specifications you need, CHIN TZON Plastics can provide expert advice and competitive pricing. Contact us today with your requirements.
This article was written by the CHIN TZON Plastics professional team. Specifications and pricing are subject to current quotation.