3–5 L
Kids and compact
A lunch box and a bottle. All-over print on polyester, a carry handle, a name pocket. The highest reorder rate of any tier — a design is outgrown inside a school year.
Audited Facility · Recycled Shells
Custom Lunch Bag Manufacturer The Wall Was Never in the Brief — 5 °C Load, 6-Hour Envelope.
The lining, the insulation core and the walls around them are specified to the hold time a brief asks for, not to a thickness picked off a shelf. Send the format, the capacity and how the bag is carried — back comes the build to those, a sample measured in a 23 °C room with the centre probe read at 15-minute intervals, and the pre-production unit before the run is released, at a 100-piece minimum.
- 3–25litres across the carry formats
- 8 mmcore at the top of the range
- 24hour reply to any after-sales request
Lunch bag types
Named by What It Carries
The shapes this floor builds most, each cut to its own pattern and not scaled from another. A format that is not here is still workable — the pattern is drafted to a sketch or a reference bag the same way.
Insulated Lunch Bag
- Foil-lined, zipped across the top.
- A lunch box and a bottle in one compartment.
- Foil-lined, zipped across the top.
- A lunch box and a bottle in one compartment.
Tote Lunch Bag
- Stands upright on a desk.
- A fixed handle, with nothing to unhook.
- Stands upright on a desk.
- A fixed handle, with nothing to unhook.
Eco-Friendly Lunch Bag
- Shell in recycled polyester or organic cotton.
- The material leads, not the print.
- Shell in recycled polyester or organic cotton.
- The material leads, not the print.
Collapsible Lunch Bag
- Folds flat once the food is out.
- Empty, it slips into a drawer.
- Folds flat once the food is out.
- Empty, it slips into a drawer.
Bento Lunch Bag
- Cut around a bento box, so it will not slide.
- Divided inside to keep the courses apart.
- Cut around a bento box, so it will not slide.
- Divided inside to keep the courses apart.
Kid Lunch Bag
- Sized for a child, not scaled from an adult bag.
- A handle or a strap they can work alone.
- Sized for a child, not scaled from an adult bag.
- A handle or a strap they can work alone.
Double Decker Lunch Bag
- Two decks in one body: hot and cold together.
- Each on its own zip, opened independently.
- Two decks in one body: hot and cold together.
- Each on its own zip, opened independently.
Lunch Backpack
- Carried on both shoulders, hands free.
- For a commute that already fills one hand.
- Carried on both shoulders, hands free.
- For a commute that already fills one hand.
Cooler Lunch Bag
- The cooler end of the range.
- Room for a whole day of food and drink.
- The cooler end of the range.
- Room for a whole day of food and drink.
The formats, and the capacity behind them
The band is worth picking before the core. No lunch bag carries the coldest wall and the most room at once — thickness takes bulk, weight and compartment space — so the format a run ships in is what caps the thickness it can take.
6–10 L
Adult and office
Two or three meal containers, a drink and snacks. The highest-volume tier in the category, and the build most corporate programmes buy.
10–15 L
Meal-prep and fitness
Portioned containers, an ice-pack sleeve, a supplement pocket. Sold on the compartment layout as much as on the hold time.
12–25 L
Family and outdoor
Food and drink for a small group, picnics and day trips. Demand is seasonal, so the run is planned around it.
What the bag is
Built as a Stack, Not a Lining
A lunch bag is the one category where the inside is the product. Four layers sit between the meal and the room, and each is chosen for a different job — which is why a brief that has named a format has said very little about the bag yet.
Outer shell
300D–600D polyester · 210D–1680D nylon · 600D–900D Oxford · 12–16oz canvas · organic cotton · neoprene · PVC-free TPU
- Fix the print method and the price band.
- Take the abrasion of a commute.
- The layer a well-built bag fails last.
Insulation core
EPE foam 3 / 5 / 8 mm · EVA foam · PE foam and foil composite
- The hold time is bought with thickness here.
- Nothing else on the bag moves the window as much.
- Settled in the brief, before the machine.
Inner lining
PEVA · food-grade aluminium foil · TPU-laminated film
- The only surface a food container touches.
- Regulatory, not structural.
- Wipeable, and the layer the join closes against.
Base board
EVA board · PP panel · foldable panel
- Holds a loaded bag upright.
- Removable on the builds that ship flat.
- Then it is a freight decision, not a structural one.
The hold time
The Hold Time Is a Curve
A retention claim without its conditions is not a specification. What follows is the envelope a lunch bag build is measured against — a chilled load in a 23 °C room, the centre probe read at 15-minute intervals, and the temperature it has to stay under at each checkpoint.
| Checkpoint | What the probe is reading | The limit |
|---|---|---|
| 0 h | Baseline, taken with the lid closed and the load already in | ≤ 5.0 °C |
| 2 h | First check, lid unopened since the baseline | ≤ 8.0 °C |
| 4 h | Mid-point, across a normal working morning | ≤ 12.0 °C |
| 6 h | Final check, at the end of the retention window | ≤ 15.0 °C |
What the core thickness buys
- 3 mmThe floor of the range. A short commute and a packed lunch eaten at midday.
- 5 mmThe middle build and the one most briefs settle on.
- 8 mmThe top of the range, and the thickness the six-hour window above is written around.
Fittings and hardware
The Parts a Brief Can Name and Change
The liner and the core decide how long a lunch bag holds. The fittings decide how it carries, and they are what a brief regularly moves late — after the pattern is drawn and the sample is signed. The parts below are the ones a buyer can name.
Matched to the opening
- Coil, reverse-coil and waterproof tapes, bought as one set with the slider and the chain.
- A slider that does not match its tape is what jams or splits under a load.
- Gauge follows the opening the pattern draws and the load behind it: a #5 chain on an everyday bag, #8 where the body packs deeper, #10 on a heavy-duty build.
The root, not the handle
- Webbing is cut to the load: 20 mm on a light tote, 25 mm standard, 38 mm on a shoulder strap.
- Bar-tack and cross-stitch run at the root, and the webbing continues past the anchor inside.
- Polyester, nylon or cotton, with a jacquard logo woven into the strap where a run carries it.
A strap that clips off
- An adjustable buckle, a hook that clips off, or a padded strap on the larger cooler.
- A metal swivel hook outlasts a plastic one; the plastic is the answer where the load is light.
- Strap strength is judged against the loaded weight the brief states, not against a default.
Load first, then price
- Acetal buckles on a standard build, heavier components where the bag is carried outdoors.
- Metal D-rings and ladder-lock adjusters where a strap has to hold its setting.
- Once the load is settled, the component grade becomes a cost decision.
The pockets a buyer finds
- An ice-pack sleeve, a cutlery holder, a bottle station, a mesh divider, a name window.
- Each is a small change to the pattern, and lifts what the bag reads as worth.
- Set at the sample — a pocket added after the pattern is cut is a new pattern.
Gifting earns its price
- A metal logo plate, zinc-alloy hooks, matte black or brushed finishes.
- Paired with a PU or structured exterior on a corporate run.
- The one place on a lunch bag where hardware is bought for how it reads.
Credentials, on file
What Each Certificate Covers on a Lunch Bag
Four credentials held at the facility, renewed through an audit rather than issued per order.
OEKO-TEX 100The shell, the webbing and the thread tested for the substances a lunch bag sits against.
ISO 9001:2015Audited at facility level, with the liner’s leak check written into the procedure.
BSCILabour conditions, working hours and floor safety, inspected to the amfori code.
GRSThe recycled share of a shell, traced to the finished bag.Recycled shell
Recycled Content Is a Chain of Custody
A recycled shell on a lunch bag is a document trail, not a shade. Under the GRS it holds when the yarn lot, the mill record and the shipment trace back one to the next, and it is the shipment certificate — not the fibre story — a retailer ends up reading.
- What the shell can be made from. Organic cotton, recycled polyester from collected bottles, or a PVC-free TPU — chosen for the brief, and quoted the way any other shell is. The organic-cotton build is the biodegradable side of that choice; re-spun polyester is the recyclable one.
- What the fibre choice does to a carbon figure. Re-spun polyester and organic cotton carry a lower footprint than the virgin shell they replace, because the material is recovered, not produced. That claim holds exactly as far as the lot behind it does, which is what makes the certificate the substantiation and not the badge.
- What is not in the shell. The outer can be built PVC-free and BPA-free, with no phthalates in the print or the coating. It carries a different limitation from the liner: the shell is not food contact, so a chemical claim here is about what a buyer touches, not about what a meal is packed in.
- How long it has to last to be worth it. A recycled shell on a lunch bag takes the same abrasion as any other and is judged the same way, so the case for it rests on the run lasting, not on being replaced. That is settled at the fittings and the construction, and not at the fibre.
After-sales
The Order Ends. The Support Does Not
A lunch bag run is judged after the cartons land, not at the loading dock. These are the terms that hold once the invoice is settled, and who answers for them.
Customization adjustments
A brief that moves after the sample — a pocket, a name window, a colourway — is a change order, not a renegotiation.
Care guidance
What the lining and the core each need to keep holding a temperature, so a buyer knows how the bag is meant to be cleaned before the first one comes back.
Replacement and extended warranty
A unit that arrives wrong or fails in ordinary use is built again, and a longer cover can be written into the order for a run that has to hold up through a season or a warranty of its own.
A reply within 24 hours
A request is tracked from the moment it lands, so the answer comes back with a status rather than a promise to look into it.
Spec to quote
Send the Build. It Comes Back Costed to the Protocol.
A quote is worth having only when it names the build: the core, the lining and the hold time, settled before a price is written, not after.
Buyer accounts
Where the Runs Went, and What Held
Two programmes, on what a lunch bag had to clear before it was filled: a recycled-shell office bag bound for a daily wipe-down, and a corporate run where the core had to carry a two-day event with no refrigeration on site.
Rachel D.Owner of Eco EssentialsFirst order: 100 pieces of a recycled-shell office bag, the mark screen-printed on the front panel. Seven days on, the sample returned in the bulk cloth, not a substitute.
Shipped on the 6–10 L office format: two or three meal containers, an ice-pack sleeve, and a daily wipe-down.
Reorder came back on the same pattern, one colourway swapped across the 100. Nothing from the first run needed replacing, which was the liner’s doing — the same film grade through a year of daily wipes.
James P.Marketing Manager at BrightWorks Inc.500 pieces for a corporate run, one colourway, the company mark embroidered on the lid. Artwork on the panel changed after the sample had already been signed.
Taking the core to 8 mm against the 5 mm the brief opened on kept a two-day event with no refrigeration on site inside the six-hour window.
That change cost one lid run and nothing else, cut into the existing pattern. All 500 shipped inspected against the signed sample.
In use
Insulated Bags, Out of the Carton
Carried on a shoulder, packed at a bench, opened on a beach, laid out for a school lunch — the same construction, photographed where the lunch bag is actually used.
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Lunch bag questions
Frequently Asked Questions About Custom Lunch Bag Manufacturer
The questions that come up on most insulated lunch bag enquiries. Where a figure already sits in a section above, the answer points at it, so no number is published twice.
When does a thicker core stop helping?
Where the bag is going stops it, not how much cold it could hold. Thickness costs bulk, weight and compartment room, which is the wrong trade on a bag that has to lift into a work bag or a school bag. A short commute and a lunch eaten at midday does not need the wall a two-day event does. The thickness range and what each option is for are set out in the retention section above, and the choice is settled at the sample, against the load the brief names.
Is the liner food-safe, and what will a retailer ask me for?
The liner is bought against food-contact limits, not to a colour, and which limits apply follows the market the bag is sold into. What a retailer or a customs officer ends up asking for is the report tied to the film lot that went into the run — not a general statement that the material is food-grade, and not a factory certificate, which covers the operation and the textile and says nothing about the film. A brief spanning two markets is built to the stricter of the two.
Why do bags arrive smelling of the liner, and what stops it?
Because a freshly welded or laminated film can hold solvent for weeks, and a sealed polybag inside a sealed carton gives it nowhere to go. It is also the one failure a final inspection cannot catch, since nothing on the bag has failed — the smell is the first thing a buyer meets and the last thing checked. Liner lots are smelled on arrival and not at packing, and bags air before they are pouched.
Which print method should a brief ask for — and which one fails first?
The shell decides it, not the artwork. A polyester kids’ carrier usually takes all-over sublimation, because the print goes into the fibre and survives the wipe a family gives it. A flat panel on Oxford or canvas takes a screen print, which sits on the surface and is the one to watch around a fold or across a join — that is where it lifts. A heat transfer holds photographic detail and is the method most often chosen on appearance alone, so its adhesion is checked after a wipe, not only at delivery.
Does an insulated lunch bag sweat on the outside, and what stops it?
A chilled load in a warm room makes the outer the coldest surface in it, and a bare non-woven shell will show condensation where it meets the air — that is the damp patch a bag leaves on a desk or inside a backpack. It is controlled at the shell: a coated or laminated outer sheds the moisture instead of holding it, and a brief that expects the bag to sit in a warm office should specify one. The inner film does a different job. It keeps the food off the foam and does nothing for the face that touches the air.
Can the liner take a microwave or a freezer?
A microwave, no. A foil liner reflects the field and an EPE or EVA core takes no heat either way — a lunch bag is built to hold a temperature, not to raise one, and a brief that needs a reheated meal is asking for a different build. A freezer is the easy direction: the film and the core are already specified for a chilled load, which is the condition the retention envelope is written around. Whichever way the brief goes, the liner is where it is settled, at the sample.