Selecting the correct garment bag size and thickness is essential for protecting clothing, maintaining packing efficiency and avoiding unnecessary material use.
A bag that is too small can compress or wrinkle the garment. A bag that is unnecessarily large may increase material usage and carton volume. Film that is too thin may not perform well during packing and handling, while excessive thickness can increase cost and packaging weight without providing a practical benefit.
This guide provides starting points for selecting garment bag dimensions and micron thickness for apparel packaging.
For available compostable garment bag formats, see our Compostable Garment Bags.
Last reviewed: October 24, 2026
Quick Answer
There is no single standard garment bag size or thickness for every clothing product.
A practical specification should consider:
- folded or hanging garment dimensions;
- garment thickness and weight;
- bag opening and closure;
- packing method;
- warehouse handling;
- ventilation or hanger openings;
- inner vs outer packaging use;
- the performance of the selected film.
For folded apparel, commonly used bag sizes may start around 30 × 40 cm for smaller garments and increase to 40 × 50 cm or larger for sweaters, hoodies and bulkier clothing.
Long dresses, jackets and coats may require significantly larger bags.
Film thickness is normally specified in microns (μm) and should be validated against the actual garment and packing process before production.
Garment Bag Size Chart
The following dimensions can be used as initial reference points when developing an apparel packaging specification.
| Clothing Type | Example Bag Size | Typical Packaging Use |
|---|---|---|
| T-shirts | 30 × 40 cm | Folded inner packaging |
| Shirts | 35 × 45 cm | Folded apparel packaging |
| Jeans / trousers | 35 × 45 cm | Folded apparel |
| Sweaters | 40 × 50 cm | Bulkier folded garments |
| Hoodies | 40 × 50 cm | Medium / bulky garments |
| Dresses | 50 × 70 cm or larger | Folded or hanging garments |
| Jackets | 60 × 80 cm | Larger garments |
| Coats | 60 × 100 cm or larger | Long / bulky garments |
These dimensions are starting references rather than universal standards.
The correct size depends on how the garment is folded, how much product volume it occupies and whether additional space is required for sealing, ventilation or hanger access.
How to Measure a Garment for Bag Size
Do not select the bag size based only on clothing size labels such as S, M, L or XL.
Instead, measure the garment in its actual packing configuration.
For Folded Garments
Measure:
- folded garment width;
- folded garment length;
- approximate garment thickness;
- any additional space required for inserting and removing the garment.
A folded hoodie, for example, may require considerably more bag volume than a T-shirt with a similar folded width and length.
For Hanging Garments
Measure:
- shoulder width;
- total garment length;
- hanger dimensions;
- garment depth or bulk;
- required hanger opening position.
Long dresses and coats should be evaluated using the finished hanging configuration rather than only the garment’s flat dimensions.
How Much Extra Space Should a Garment Bag Have?
The finished bag normally requires some clearance around the garment.
Too little space can make packing difficult or place unnecessary stress on the seams.
Too much space can:
- increase film consumption;
- reduce presentation quality;
- increase folded packaging volume;
- reduce carton-packing efficiency.
The correct allowance depends on garment bulk, bag construction and packing workflow.
For repeat apparel programs, it is usually better to test the actual garment inside a sample bag rather than determine the specification only from a size chart.
Garment Bag Thickness Guide
Garment bag film thickness is normally expressed in microns (μm).
The following ranges can be used as general specification starting points:
| Thickness | Typical Starting Application |
|---|---|
| 20–25 μm | Lightweight inner garment packaging |
| 25–30 μm | General apparel inner packaging |
| 30–40 μm | Heavier garments or higher handling requirements |
| 40–50 μm | Heavy or demanding applications requiring additional film strength |
These ranges should not be treated as fixed rules.
A 25 μm film from one material formulation may not perform exactly like a 25 μm film made from another formulation.
Performance can also be influenced by:
- handling conditions.
- film formulation;
- bag dimensions;
- seam construction;
- printing;
- perforations;
- hanger holes;
- adhesive closures;
How to Choose Thickness by Packaging Use
Instead of selecting thickness only by garment type, consider how the bag will actually be handled.
Lightweight Inner Packaging
T-shirts, shirts and other lightweight folded products may use relatively thin film when the bag is mainly used for:
- garment separation;
- warehouse identification;
- retail preparation;
- protection inside another outer package.
Standard Apparel Handling
For products moving through garment factories, warehouses and fulfillment operations, additional film strength may be useful where bags are repeatedly handled.
Bulky or Heavy Garments
Sweaters, hoodies, jackets and coats may place more stress on the film because of:
- increased product weight;
- greater folded volume;
- sharper garment hardware;
- higher tension during insertion.
In these cases, sample testing is more reliable than automatically selecting a thickness from the garment category alone.
Why Thicker Does Not Always Mean Better
Increasing micron thickness can improve some aspects of mechanical performance, but thicker film is not automatically the best specification.
Higher thickness can also increase:
- material consumption;
- unit weight;
- packaging cost;
- folded volume;
- carton or shipping volume.
The objective should therefore be to identify the minimum practical specification that performs reliably in the intended application, rather than simply choosing the thickest available film.
Size and Thickness Should Be Specified Together
Garment bag size and thickness should not be selected independently.
A large garment bag may experience different handling stresses from a smaller bag using the same film thickness.
For example, increasing bag width or length can change:
- film movement during packing;
- seam loading;
- tear propagation;
- hanging performance;
- overall bag weight.
For this reason, a garment bag specification should normally include at least:
| Specification Item | Example |
|---|---|
| Bag width | 400 mm |
| Bag length | 500 mm |
| Thickness | 25 μm |
| Structure | Self-seal |
| Flap | Custom |
| Hanger opening | If required |
| Vent holes | If required |
| Printing | Logo / barcode / SKU |
| Packing | Pieces per bundle / carton |
The complete specification should then be tested as one finished package.
Folded vs Hanging Garment Bags
Folded and hanging garments require different bag structures.
Folded Garment Bags
Common applications include:
- T-shirts;
- shirts;
- knitwear;
- trousers;
- jeans;
- hoodies.
Typical structures include open-top and self-seal garment bags.
Hanging Garment Bags
Common applications include:
- dresses;
- suits;
- jackets;
- coats;
- retail garments stored on hangers.
These bags may require:
- additional length;
- hanger openings;
- shoulder allowance;
- ventilation holes;
- different sealing arrangements.
The bag should therefore be specified according to the actual garment presentation method.
Inner Garment Bags vs Outer Shipping Packaging
A garment bag and an e-commerce shipping mailer perform different jobs.
Garment Bag
Primarily used for:
- protecting individual apparel items;
- separating SKUs;
- garment presentation;
- warehouse handling;
- inner packaging.
Shipping Mailer
Designed for:
- courier handling;
- parcel closure;
- shipping labels;
- abrasion exposure;
- outer transportation.
A garment bag should not automatically be specified as an outer courier bag simply by increasing its thickness.
If the package will travel directly through a parcel network, a dedicated mailer specification should be reviewed separately.
For wider apparel packaging workflows, see our Compostable Clothing Packaging Solutions.
Closure, Vent Holes and Hanger Openings
Size and thickness are not the only factors that affect garment-bag performance.
Self-Seal Flaps
A self-seal garment bag requires additional material for the flap and adhesive area.
The flap dimensions should therefore be included when confirming the finished specification.
Ventilation Holes
Vent holes can help release trapped air and reduce package volume.
Their diameter, quantity and position should be reviewed together with the bag size and garment type.
Hanger Openings
Hanging garments may require a hanger opening at the top of the bag.
The opening should be positioned according to:
- hanger size;
- garment shoulder width;
- bag construction.
For detailed customization options, see our Custom Compostable Garment Bags.
Compostable Garment Bag Size & Thickness Considerations
Compostable garment bags may use PBAT / PLA / starch-based film formulations.
However, compostable film should not be specified by thickness alone.
Performance can vary according to:
- film formulation;
- thickness;
- bag dimensions;
- seal construction;
- storage conditions;
- printing;
- adhesive components;
- finished bag structure.
A compostability certificate for a material or defined product scope should also not automatically be assumed to cover every custom garment-bag specification.
Certification applicability should be reviewed against the applicable documentation and the final finished product.
For certification information, visit our Evidence & Verification Center.
Test Samples Before Final Production
Size charts and micron ranges are useful starting points, but the final specification should be checked using actual samples.
A garment-bag sample review can evaluate:
- garment fit;
- insertion and removal;
- film feel;
- transparency;
- tear resistance;
- seam performance;
- flap and adhesive position;
- ventilation;
- barcode visibility;
- overall packing efficiency.
For projects with several garment categories, brands can also test whether multiple SKUs can share one standardized bag size.
Reducing unnecessary packaging sizes may simplify purchasing and warehouse inventory.
Garment Bag Size & Thickness FAQ
What size garment bag is used for T-shirts?
A bag around 30 × 40 cm can be used as a starting reference for many folded T-shirts, but the final size should be checked against the actual folded garment dimensions.
What size garment bag is commonly used for shirts?
Approximately 35 × 45 cm can be used as a starting point for standard folded shirts, depending on folding method and garment bulk.
What micron thickness is used for garment bags?
Garment bags may use thicknesses ranging from approximately 20 μm to 50 μm, depending on material, garment weight, bag dimensions and handling requirements.
Is 25 μm suitable for garment bags?
It may be suitable for some apparel inner-packaging applications, but suitability should be confirmed using the actual film, bag dimensions and garment.
Are thicker garment bags always stronger?
Increasing thickness can improve some performance characteristics, but material formulation, seals, perforations and bag construction also affect overall performance.
What thickness should be used for compostable garment bags?
There is no single thickness suitable for every compostable garment bag. The specification should be selected according to garment type, bag dimensions, film formulation and handling requirements, then confirmed by sample testing.
Should garment bags and shipping mailers use the same thickness?
Not necessarily. Garment bags are usually inner packaging, while mailers are designed for outer courier handling. They should be specified according to their different functions.
Need Help Confirming Your Garment Bag Specification?
Send us your garment type, folded dimensions, preferred bag structure and estimated quantity.
We can review suitable garment bag dimensions and thickness options before sampling or production.
