A capacity number cannot tell a buyer whether a particular lunch box or bottle will pass through the opening. Define the actual load before selecting a custom cooler bag size. When briefing Weierken, include the containers and cooling packs together, not only the volume of the bag.
Check the loading path as well as the final arrangement
Measure the rigid items at their widest points, including lids and handles. Draw the intended arrangement and note which items must stay upright. Then check whether the largest item can pass through the opening without forcing the closure or distorting the bag.
Reserve space for the cooling packs and any divider that will actually be supplied. A demonstration with empty bottles and no cooling media can make a layout appear more usable than the intended configuration. Use the same load when comparing samples.
A worked brief you can adapt
| Decision | Example brief | Evidence to request |
|---|---|---|
| Lunch box | Buyer supplies actual box dimensions | Insertion and removal through opening |
| Bottles | Two bottles carried upright in example | Lid clearance and stability |
| Cooling packs | Specified shape and placement | Space remaining after packs are inserted |
| Access | Remove one item during use | Photo sequence without unloading everything |
Turn the review into an actionable request
As a worked scenario, suppose a buyer wants to remove one bottle while the lunch box stays inside. A narrow opening may fail that access requirement even when the packed items fit. The design response could involve the opening, divider or arrangement rather than simply increasing the stated liters.
Send Weierken a top-view sketch and a list of the physical items used for review. Ask for the dimensions and arrangement to be recorded with the sample. This turns “fits our lunch set” into a repeatable approval check without inventing a universal can-count or insulation claim.
For the connected specification, use our capacity and dimensions guide. Send the completed brief through the Weierken project inquiry form, including your company, work email, phone, product and quantity. Ask for any unresolved item to be listed separately in the reply; a proposal is not an approved production instruction.
Frequently Asked Questions
Can two bags with the same capacity fit different containers?
Yes. Shape, opening geometry and internal structures affect usable space. Compare the actual load and access sequence rather than relying on the nominal capacity alone.
Should cooling packs be included during sample approval?
If they form part of the intended use, include their actual dimensions and placement. Otherwise the approval may describe a configuration the user will not experience.
From brief to sample
Build the right bag for your collection.
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