The opening decides whether it dries; the litres only decide weight · review
A 3 litre reservoir that names its film as PE/EVA and includes a neoprene hose cover and a hose brush, then leaves the opening, the valve, the fittings and the weight entirely undescribed.
The bottom line The film is named and the extras are useful. The opening, the valve and the fittings are not described at all, which leaves the most important question on this shelf unanswered.
Three litres, a PE/EVA film stated tasteless, BPA-free and durable, a claim of being completely tight and leak-proof, universal compatibility with rucksacks that have a reservoir provision, a neoprene hose, and a hose brush.
A named film. PE/EVA is an answer. BPA-free, which is what several listings here offer instead, describes something that is not in the plastic rather than what is.
Two accessories in the box. A neoprene cover for the tube and a brush for cleaning it. Both are things people buy afterwards, and both are things that stop a reservoir being abandoned.
The opening. Nothing. Not a type, not a width, not a word. On this shelf that is the specification that decides whether a reservoir survives, because a bladder that never dries properly is a bladder that gets replaced.
The hose fittings. No bite valve, no shut-off, no coupling. A neoprene hose is supplied and nothing is said about how it attaches or how you drink through it.
The weight and the seams. Neither published, and the leak-proof claim leans on the second of them.
Ask the seller what the opening looks like, and whether the hose detaches at the reservoir. Those two answers change the daily experience more than the three litres do.
Selling between 30 € and 35 € across the German and Spanish Amazon stores when this page was checked.
Catalogued on the American, British, French and Italian Amazon stores with nobody selling it: the reference is there, the offer is not.
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.
| Capacity | 3 litres — stated |
|---|---|
| Opening type | Not published on the listing |
| Fill port width | Not published on the listing |
| Hose internal diameter | Not published on the listing — a neoprene hose is supplied, and neither its length nor its bore is published |
| Bite valve | Not published on the listing |
| Shut-off | Not published on the listing |
| Quick-disconnect fitting | Not published on the listing |
| Film material | PE/EVA — stated, and described as tasteless, BPA-free and durable |
| Seam construction | Not published on the listing — the maker claims it is completely tight and leak-proof, without saying how it is joined |
| Stated cleaning method | Not published on the listing — a hose brush is supplied, and no method is named for the reservoir itself |
| Empty weight | Not published on the listing |
| Amazon reference | B0DJ3G7VQT (same reference on 6 Amazon marketplaces) |
| EAN | 4260765590130 |
It names the film, which is more than BPA-free does — that phrase says what is absent, not what is present. PE and EVA are the common alternatives to TPU on this shelf, and naming them at least says which family of material you are holding.
Because it is the first cause of a reservoir being thrown away. A wide slide top can be turned back and dried; a narrow port cannot. With nothing published, that is a question you can only answer after it arrives.
2 L reservoir · large opening, type not named · hose supplied · almost nothing else published
A 2 litre reservoir sold with a hose, whose listing publishes the capacity and then almost nothing else — no opening type, no film, no valve, no fittings and no weight.
Best for: A replacement reservoir where the pack sleeve is the only constraint and the details are worked out on arrival.
≈ 25 €
3 L reservoir · two hoses, summer and winter · cleaning brush included · opening type not named
A 3 litre reservoir that ships with two drinking hoses and a cleaning brush — three items other listings sell separately — while naming neither the opening, nor the film, nor the valve.
Best for: Someone who wants the brush and the winter hose in the same box and will find out about the opening on arrival.
≈ 24 €
3.0 L reservoir · slide-clip closure · reversible for cleaning · bite valve, auto-closing · 130 g
The only reservoir on this shelf to publish an empty weight — 130 g — alongside a slide-clip closure, full outside dimensions and a bladder the maker states can be turned inside out to clean.
Best for: A pack where the reservoir has to be cleaned and dried properly, and where 130 g is a figure you want to know rather than guess.
≈ $45 / £41 / 35 €
