Insulation thickness and lid discipline, not the litre figure · review
A 30 litre folding bag with a named insulation system and tight-closing zips, and not one hour of retention published behind either.
The bottom line A well-made-sounding bag from the name that owns this subject, publishing a trade name where a specification should be and no hours at all.
A 30 litre folding cool bag with insulation the maker calls IsoTec, tight-closing zips, external mesh pockets, and a stated waterproof construction. It folds flat after use.
IsoTec is stated and never explained. No material, no layer count, no thickness. One bag in this hub publishes 8 mm of EPE foam; another publishes five layers with a PEVA coating. This one publishes a trade mark.
Nothing in the title or the bullets gives a retention figure. Snacks and drinks stay “pleasantly cool” and that is the whole claim.
Three of the nine boxes here quote no figure. Given that every figure the other six quote arrives with no fill ratio and no ambient temperature, an absent number is not obviously worse than an unconditioned one — but it does mean there is nothing at all to compare.
No thickness. No drain. No handle or strap named. No empty weight.
Check how it is carried on the product photographs, because the text does not say.
Selling at about 30 € on the German Amazon store when this page was checked.
It also sells on the British Amazon store in the local currency, which the range above does not cover — that range counts euro stores and nothing else.
Catalogued on the French, Italian and Spanish Amazon stores with nobody selling it: the reference is there, the offer is not.
Nothing came back from the American Amazon store, so the buy link there opens a local search instead of a page that is not there.
Every figure in this section is what Keepa returned on the day this page was last updated. Prices and offers change without notice.
Prices quoted in this text were read on 6 September 2026. The live price is at the top of the page.
| Box type | Soft folding insulated bag — stated; passive, with no power connection |
|---|---|
| Capacity | 30 litres — stated in the title |
| Insulation type | IsoTec insulation — stated as a name; no material, construction or layer count is given behind it |
| Insulation thickness | Not published on the listing |
| Ice retention | Not published on the listing — snacks and drinks are stated to stay pleasantly cool, with no figure |
| Ice retention conditions | Not published on the listing — no retention figure is published, so there are no conditions behind one |
| Closure and seal type | Tight-closing zips — stated, alongside a waterproof claim for the materials |
| Drain | Not published on the listing |
| Carry arrangement | Not published on the listing — external mesh pockets are described, and no handle or strap is named |
| Empty weight | Not published on the listing |
| Amazon reference | B0H36FYBQY (same reference on 5 Amazon marketplaces) |
| EAN | 5010576178572 |
A name the maker uses for its insulation. The listing gives nothing behind it — no material, no layer count and no thickness — so it cannot be compared with the 8 mm of EPE foam that one other bag in this hub publishes, or with the five-layer construction another states.
The listing does not say. Snacks and drinks are stated to stay pleasantly cool and no hours are given. Three of the nine boxes here decline to quote a figure; treat that as different from, and arguably more honest than, an unconditioned number.
Soft folding basket · 38 × 24 × 25 cm open · heat-sealed lining · zip closure · 30 kg stated load · no litre figure published
A folding insulated shopping basket with an aluminium frame and a stated 30 kg load, and the only listing in this hub that publishes no capacity in litres at all.
Best for: Carrying a full shop from car to table, where the frame and the handles do more work than the cooling does.
≈ 20 €
Soft folding bag · 30 litres in the title, lunch bag in the bullets · over 12 h stated · isothermal lining, unnamed · no closure described
A folding cool bag whose title says 30 litres and whose bullets describe an office lunch bag five times over — the two halves of the listing do not agree, and this page reports both.
Best for: A packed lunch rather than a picnic, on the reading of this listing that its own bullets support.
≈ 25 €
Rigid passive box · 22 litres · 27.5 × 44.5 × 38.3 cm · four 450 ml ice packs built into the lid · 40 h cold and 18 h warm stated · PU/PP
The longest cooling figure published in this hub at 40 hours, and the listing itself says the number rests on the four ice packs built into its lid.
Best for: A weekend where the box is packed once and opened rarely, and the ice packs are frozen properly beforehand.
≈ 60 €
