The opening decides whether it dries; the liters only decide weight · review
The cheapest reservoir on this shelf at nine dollars, and one of only two anywhere here to publish a hose bore — with a temperature range from minus twenty degrees and an SGS certification.
A 2 liter reservoir, white, 3.5 inch screw cap.
HEIKLN states premium taste-free BPA-free material, SGS certified and 100 per cent food grade, with a passed pneumatic pressure test and a double sealing side technique; a soft mouthpiece with an accessible on/off valve, a stated drinking sequence of pull up, bite, push back, a dust cover, and a detachable quick-release tube with automatic shut-off so the reservoir stays filled; a wide opening with a 3.5 in screw-on cap admitting a hand or a bottle brush and taking ice cubes directly; 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.
No film named. No thickness. No cleaning method. No weight.
A bore, and a port width.
Nought point four inches of hose, and a three and a half inch cap.
Seventeen reservoirs sit on this shelf. Two publish a bore and two publish a port width, and all four of those figures are in this group.
This shelf’s introduction calls the bore the first of three specifications hidden in the hose. At nine dollars, this is one of the two pages that gives it.
Unlike its sibling.
This page states −20 to 50 degrees Celsius. The sibling listing in this group, otherwise word-for-word identical in four places, prints 20 to 50.
Read it as a storage and durability range rather than a working one: a reservoir at −20 °C (-4 °F) holds ice, and the hose freezes first.
Three brands, the same sentences.
The wide opening admitting a hand or a bottle brush. The ice cubes from a scoop or a refrigerator dispenser. The quick-release tube that auto-shuts so the bladder stays filled.
Inside that shared prose the numbers differ: 3.5 in here against 4 in on the sibling, −20 °C (-4 °F) here against 20 °C (68 °F) there, and one sibling drops the bore altogether.
Check the figures one at a time.
The American Amazon store was listing it at about $9 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 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 |
|---|---|
| Opening type | 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 |
| Fill port width | 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 |
| Hose internal diameter | 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 |
| Bite valve | A soft durable mouthpiece drunk from by biting, with the sequence stated: pull up on the drinking cap, bite gently with the front teeth, push back to stop the flow |
| Shut-off | An accessible on/off valve on the mouthpiece — stated to prevent leakage, with a dust cover over it to keep dirt out |
| Quick-disconnect fitting | A detachable quick-release tube with automatic shut-off, so the reservoir stays filled and does not leak when the hose is removed |
| Film material | Not named — the listing states premium material, taste-free, BPA-free, SGS certified and 100 per cent food grade, with a passed pneumatic pressure test. No polymer and no wall thickness |
| Seam construction | A double sealing side technique — stated, credited with improved durability. No weld or heat-seal method is named |
| Stated cleaning method | Not published as a method. The wide opening is stated to be large enough for a hand or a bottle brush; no dishwasher claim and no reversibility |
| Empty weight | Not published |
| Amazon reference | B0CLB55ZCJ |
| EAN | 0762409684686 |
Less than you would expect, which is the surprise here. This page publishes two of the figures that almost nothing else on this shelf gives — a 0.4 inch hose bore and a 3.5 inch fill port — plus a hose length, external dimensions, a temperature range, an SGS certification and a food-grade claim, with an auto-shutoff quick release and an on/off valve at the mouthpiece. What it leaves out is the film material, any thickness, any cleaning method and any weight, and the opening is a screw cap rather than something that reverses. For a spare reservoir kept in a drawer, that is a good trade.
It is at least printed correctly, which the sibling listing in this group is not: this page states a tolerance from −20 to 50 degrees Celsius, where the sibling drops the minus sign and reads 20 to 50. As a claim it describes the film and the tube surviving the cold rather than the water staying liquid — a reservoir at −20 °C (-4 °F) contains ice, and the hose is the first thing to freeze, which is why the European side of this shelf sells a listing with a separate winter hose. Read it as a storage and durability range, not as a working one.
Because three listings in this group, from three brands, share the same sentences word for word — the wide opening that admits a hand or a bottle brush, ice cubes added from a scoop or a refrigerator dispenser, and the quick-release tube that auto-shuts so the bladder stays filled. The figures inside the shared wording have been edited unevenly: this page gives a 3.5 inch cap and the sibling gives 4; this page gives −20 °C (-4 °F) and one sibling gives 20. Treat the prose as a template and check the numbers one at a time, because they are not describing the same reservoir.
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 |
|---|---|---|---|---|---|
| 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 |
| 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 |
| 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 cheap spare, or a replacement where the published bore and the 14.2 by 6.8 inch size have to match what you own
Amazon reports what buyers took in the month before this page was last checked: at least 1,000.
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
