The opening decides whether it dries; the liters only decide weight · review
One of only two listings on this shelf to publish a hose bore — 0.4 inches — on a two-liter reservoir with a screw cap, an on/off bite valve and an auto-sealing quick release, for twelve dollars.
A 2 liter reservoir with a screw cap and a detachable hose.
CHERAINTI states a large opening wide enough for a hand or a bottle brush with a screw-on cap that goes on and off easily and takes ice cubes directly; premium BPA-free material that leaves no plastic taste, a passed pneumatic pressure test and a double sealing side technique; a stated tolerance from 20 to 50 degrees Celsius, external dimensions of 14.2 × 6.8 in and a tube of 0.4 in diameter and 40 in length; a high-flow bite valve with an accessible on/off valve and a dust cover; and a quick-release tube whose connector shuts off automatically so the reservoir stays filled when the hose is removed.
No fill port figure. No film named. No cleaning method. No weight.
Nought point four inches, stated.
Seventeen reservoirs sit on this shelf. Two publish a bore, and both are in this group.
Not one of the nine European listings publishes any. This shelf’s introduction calls internal diameter the first of three specifications hidden in the hose, because it sets how hard you draw and whether other brands’ parts fit.
A 40 inch length is published beside it.
The opening decides whether it dries.
The listing says the cap is wide enough for a hand or a bottle brush. It does not say the reservoir reverses or turns inside out.
This shelf’s buying tip draws the conclusion: budget for a brush set, and expect to replace it sooner than the page suggests.
What helps is that the hose comes off and seals itself, so the reservoir can be opened and propped with nothing dangling.
A dropped minus sign, almost certainly.
The sibling listing in this group — different brand, word-for-word identical wording in four other places — prints −20 to 50 degrees Celsius.
Read literally, this page says the reservoir should not be used in jacket weather. Treat the range as unreliable rather than as a figure.
The American Amazon store was listing it at about $12 at the time of writing.
Every figure here is what Keepa held on the day this page was last revised. Offers and prices shift without warning.
Prices quoted in this text were read on October 8, 2026. The live price is at the top of the page.
| Capacity | 2 L — stated, with external dimensions of 14.2 × 6.8 in. The listing states the reservoir is compatible with almost any hydration pack |
|---|---|
| Opening type | A screw-on cap, stated to go on and off easily and to be wide enough for a hand or a bottle brush. This shelf's introduction divides openings into those that can be turned back and dried and those that cannot; a screw cap is the second kind, and this listing does not claim the reservoir reverses |
| Fill port width | Not published as a figure. The opening is described as large and as fairly wide for a hand or a bottle brush, and no diameter is given — where two other listings in this group, which share this one’s wording, publish 4 in and 3.5 in |
| Hose internal diameter | 0.4 in — stated, with a hose length of 40 in. It is one of only two bore figures published on this shelf, and not one of the nine European listings here publishes any |
| Bite valve | A high-flow bite valve — stated, with a soft mouthpiece drunk from by biting, and a dust cover to keep dirt out |
| Shut-off | An on/off valve on the mouthpiece — stated as easily accessible, so flow can be cut at the bite valve rather than only at the reservoir |
| Quick-disconnect fitting | A quick-release tube that detaches, with a connector that shuts off automatically so the reservoir stays filled when the hose is removed. That is the fitting this shelf's introduction says decides whether you can lift the bladder out to refill |
| Film material | Not named — the listing states premium material, BPA-free, that will not leave a plastic taste, and names no polyurethane, TPU or EVA. No wall thickness is published |
| Seam construction | A double sealing side technique — stated, credited with improved durability, and the reservoir is stated to have passed a pneumatic pressure test. No weld or heat-seal method is named |
| Stated cleaning method | Not published as a method. The large opening is stated to admit a hand or a bottle brush, and the smooth interior to be easy to clean; no dishwasher claim and no reversibility |
| Empty weight | Not published. Only one American listing on this shelf publishes one |
| Amazon reference | B071DQSZB8 |
| EAN | 0667673990832 |
Because it sets how hard you have to draw, and because it decides whether a replacement hose or valve from another brand will fit. This shelf's introduction calls it the first of three specifications hidden in the hose, and this is one of only two listings on this entire shelf that publishes it: 0.4 in, with a 40 in length beside it. Not one of the nine European listings here gives a bore at all. If you are buying this as a replacement reservoir for a pack whose hose routing you already like, that figure is the one that tells you whether the parts interchange.
With a brush, and slowly. The opening is a screw cap described as wide enough for a hand or a bottle brush, and the listing does not claim the reservoir reverses or turns inside out. This shelf's buying tip is blunt about the consequence: if it cannot be turned open and hung flat, budget for a brush set and expect to replace it sooner than the listing suggests. What helps here is the auto-sealing quick release — the hose comes off, so the reservoir can be opened and propped without a tube dangling in the way, and the hose can be flushed separately.
That is what this page says — it states the reservoir can withstand temperatures from 20 to 50 degrees Celsius — and it is almost certainly a dropped minus sign, because the sibling listing in this group with word-for-word identical wording elsewhere states −20 to 50 degrees. Read as printed, the lower figure would make the reservoir unusable in any weather a jacket is needed for. Treat the range as unreliable rather than as a specification, and note that it is the only temperature claim either way among the American listings here.
Close prices, same category: comparable camping gear. We keep only the specifications all of them publish, because a column with gaps compares nothing.
| Model | Price | Capacity | Opening type | Fill port width | Hose internal diameter |
|---|---|---|---|---|---|
| CHERAINTI HB-OOA1 | $12 | 2 L — stated, with external dimensions of 14.2 × 6.8 in. The listing states the reservoir is compatible with almost any hydration pack | A screw-on cap, stated to go on and off easily and to be wide enough for a hand or a bottle brush. This shelf's introduction divides openings into those that can be turned back and dried and those that cannot; a screw cap is the second kind, and this listing does not claim the reservoir reverses | Not published as a figure. The opening is described as large and as fairly wide for a hand or a bottle brush, and no diameter is given — where two other listings in this group, which share this one’s wording, publish 4 in and 3.5 in | 0.4 in — stated, with a hose length of 40 in. It is one of only two bore figures published on this shelf, and not one of the nine European listings here publishes any |
| HEIKLN CXHEBLADDERWH | $9 | 2 L — stated in the bullets, with external dimensions of 14.2 × 6.8 in and compatibility with most hydration packs. The title also lists 1.5 L, 2.5 L and 3 L without saying which is in the box; the fifth bullet says one white bladder is supplied | A screw-on cap, stated to go on and off easily, with a wide opening large enough for a hand or a bottle brush. A screw cap cannot be turned back on itself and hung flat, as this shelf's introduction sets out | 3.5 in — stated for the screw-on cap. One of only two port widths published on this shelf; the sibling listing in this group that shares this page’s wording states 4 in | 0.4 in — stated, with a hose length of 40 in. One of only two bore figures on this shelf, and no European listing here publishes any |
| Baen Sendi 201801 | $16 | 2 L each, stated as 70 oz, with two reservoirs supplied — one blue and one army green. The title also lists 1.5 L, 2.5 L and 3 L as available sizes without saying which is in the box; the bullets describe the 2 L pair | A screw-on cap, stated to go on and off easily, with a large opening for pouring and for admitting a hand or a bottle brush. This shelf's introduction notes that a screw cap cannot be turned back on itself and hung flat | 4 in — stated for the screw-on cap. It is the widest fill port published on this shelf; the sibling listing in this group that shares this page’s wording states 3.5 in | Not published — although the two listings in this group that share this page’s wording both publish 0.4 in. The template was edited here and the bore was dropped |
| CamelBak Crux 2L | $30 | 2 L — stated, and given also as 70 oz. The smaller of the two Crux reservoirs in this group, at ten dollars less than the 3 L | A leak-resistant cap, stated to be easier to open and close and to reduce leaks during filling and transport. The type is not named beyond cap, and no reversibility is claimed | Not published as a figure, but an ergonomic fill handle is stated — designed for easier lifting and refilling at water sources or sinks. The 3 L listing in this group does not mention one | Not published, on a listing whose first bullet is a high-flow claim |
A first reservoir, or a replacement where the hose bore has to match a pack you already own
Amazon reports what buyers took in the month before this page was last checked: at least 4,000.
The figure is a floor, rounded by Amazon, and read through Keepa — it says what buyers picked, not what a maker claims.
Specifications: the manufacturer sheet for camping and hiking gear and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.
2 L reservoir · large opening, type not named · hose supplied · almost nothing else published
A 2 liter 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.
3 L reservoir · two hoses, summer and winter · cleaning brush included · opening type not named
A 3 liter 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.
Two 2 L reservoirs, 70 oz each · 4 in screw cap, the widest port stated here · bite valve with on/off · quick-release with auto-lock · a neck gaiter supplied · no bore, no film named
Two complete reservoirs for sixteen dollars, with the widest fill port stated on this shelf at four inches — on a page whose wording appears under two other brands in this same group.
Best for: Two people, or a spare kept filled in a fridge, where price per reservoir is the whole decision
≈ $16
