What should an insulated lunch bag RFQ define first?
Start with the use case. A kid's school lunch bag, adult office tote, meal-prep cooler, picnic carrier, and delivery-style thermal bag are not the same product.
The supplier needs to know what the bag must hold, how long it should keep contents insulated, how it will be carried, how it will close, and where it will be sold. Without that, the quote becomes a price for a visual style, not a production-ready product.
Define these inputs before asking for a unit price:
| RFQ input | What to specify |
|---|---|
| User | kids, adults, office workers, meal-prep buyers, outdoor use |
| Capacity | number of lunch boxes, bottles, cans, or liters |
| Dimensions | external size and usable internal size |
| Temperature goal | cold-retention or heat-retention expectation, stated as a test target |
| Closure type | zipper, hook-and-loop, buckle, roll-top, magnetic, or drawstring |
| Carrying style | handle, shoulder strap, detachable strap, backpack straps |
| Sales channel | Amazon FBA, DTC, retail, corporate gift, promotion |
A factory that cannot quote against a defined use case is not quoting the product you plan to sell.
Which outer material should buyers compare?
Outer material changes cost, appearance, durability, cleanability, and print method. The RFQ should name the material family instead of asking for an "insulated lunch bag" as a generic item.
The three common material families to compare are polyester, oxford fabric, and non-woven fabric.
Polyester is the default commercial option for low-to-mid price lunch bags. It supports printed designs, varied colors, and lighter consumer styles.
Oxford fabric is used when the buyer wants a sturdier hand feel, better abrasion resistance, or a more structured bag. It can raise unit cost, but it also supports a more durable positioning.
Non-woven fabric fits promotional bags and low-cost giveaways. It is not the right default for a product that needs repeated daily use, strong zipper performance, and premium Amazon positioning.
Ask the supplier to confirm fabric weight, coating, water resistance claim, colorfastness expectation, and the exact printing method. "Polyester" alone is not a specification.
What insulation details belong in the RFQ?
Insulation is the part buyers skip because it is hidden. That is where the risk sits.
Ask for the insulation layer, lining material, thickness, and thermal test target. If the supplier only describes the outside shell, the buyer still does not know how the bag performs.
For a commercial RFQ, request:
- outer material and fabric weight
- insulation material and thickness
- inner lining material
- seam construction around the lining
- whether the lining is heat-sealed or stitched
- cold-retention or heat-retention test conditions
- closure type and zipper, buckle, or fastener specification
- whether the supplier can provide a pre-production sample using final materials
Do not accept "keeps food fresh" as a performance claim. Turn it into a test: contents, starting temperature, room temperature, time window, and acceptable ending temperature.
Supplier specifications and certification claims are unverified until document review. Treat them as prompts for proof, not proof itself.
How should capacity and dimensions be written?
Capacity should be stated two ways: actual internal dimensions and practical load.
A bag listed as large can still fail if it cannot hold the buyer's target lunch container, bottle, ice pack, and utensils at the same time. External dimensions do not prove usable capacity.
Write the RFQ like this:
- External dimensions: length x width x height
- Internal usable dimensions: length x width x height
- Target load: one 1-liter bottle plus two meal containers, or the buyer's exact configuration
- Shape requirement: soft-sided, semi-rigid, square, tote, box, or foldable
- Weight limit: empty product weight target
- Carton packing: units per carton, carton dimensions, gross weight, net weight
If the supplier cannot confirm internal usable dimensions, request a sample and measure it with the target containers inside. A lunch bag that photographs well but cannot hold the promised load will create return risk.
What quality failures should the RFQ turn into tests?
Weak lunch bags fail at stress points: zipper, handle stitching, lining seams, insulation compression, odor, and print durability.
The RFQ should not ask whether quality is good. It should define what failure looks like.
Practical checklist
Ask the supplier for:
- final material swatches for outer shell, insulation, and lining
- a golden sample made with the same zipper, puller, lining, strap, closure, and logo method
- closure type, closure component material, and replacement options
- zipper cycle test target or supplier's available zipper test record
- handle and strap load test target
- lining leak or wipe-clean test method
- print adhesion or rub test method
- stitching density and reinforcement points
- sample policy, sample fee, and sample lead time
- MOQ by plain stock, custom color, custom logo, and custom packaging
- carton packing details for Amazon FBA planning
- warranty or after-sales policy in writing
If a supplier says these details are not needed, they are treating the RFQ as a catalog inquiry.
How should MOQ, logo, and packaging be handled?
MOQ changes when the order moves from plain stock to custom production. Logo method, fabric color, zipper color, lining color, closure component, hangtag, insert card, polybag, and carton mark can each change the commercial answer.
Separate the RFQ into three quote versions:
| Quote version | Use case |
|---|---|
| Plain stock | Fast test order with no custom material |
| Logo only | Basic private-label launch |
| Full custom | Custom fabric, lining, shape, packaging, and carton marks |
Ask the supplier to state what changes between the three versions: MOQ, sample cost, sample time, production time, unit price, packaging cost, and whether any tooling or plate fee applies.
Do not blend custom options into one quote. It hides which decision is driving cost.
What red flags should make buyers pause?
Walk away if the supplier cannot explain the bag construction beyond photos.
Red flags include:
- "same as picture" with no material specification
- no insulation material or thickness stated after request
- only external dimensions, with no usable internal size
- closure type or zipper specification missing from the quote
- quote changes after logo or packaging questions without explanation
- no sample made with final materials
- zipper, handle, and lining details treated as minor
- certification claim provided without a document or issuing body
- MOQ drops sharply after pushback with no change in production assumptions
- supplier refuses carton packing details before order confirmation
- the same product is quoted with inconsistent fabric, size, or capacity details
One missing field is not proof of a bad supplier. But missing insulation, unclear dimensions, weak sample terms, and vague customization costs stacked together are enough to stop the order.
Where does Agence Octo SAM fit?
The manual work is simple for one supplier. It becomes harder when an FBA seller compares 20 suppliers, three material routes, multiple logo options, and changing MOQ terms.
Agence Octo SAM helps sourcing teams compare supplier evidence before committing to production. Use it when RFQ replies need to be normalized, compared, and reviewed before a factory is selected.