The opening decides whether it dries; the liters only decide weight · review
The only reservoir in this group with an internal drying tab, on a Slide-Seal top that reverses for cleaning — with baffles, a 3D bottom and a side exit port to stop it moving in the pack.
A 2 liter Contour reservoir, clear, Slide-Seal top.
HydraPak states a lightweight low-profile reservoir whose updated Slide-Seal top carries a universal pack hanger designed to work with clips, hooks and loops from a variety of name-brand packs; a slim profile with a 3D bottom, fixed Shape-Loc baffles and a side exit port that increases stabilization during high-impact activity; the lightweight Comet bite valve, self-sealing after each sip with a thumb-activated shut-off and a tube magnet clip; a durable flexible handle for filling and carrying, with an internal drying tab making the reservoir easy to reverse for cleaning; and a Beyond Lifetime Guarantee.
No film named. No thickness. No bore. No disconnect. No weight.
Open across the width, reverse, hang flat.
This shelf’s introduction says a bladder that never dries properly is a bladder that gets thrown away. The buying tip says to work out how it dries before ordering.
This is the only listing in this group with a mechanism for it rather than a wide hole and a brush.
Water that moves.
Fixed baffles stop the slosh from end to end. A 3D bottom gives the reservoir a shape when full. A side exit port takes the hose out of the edge instead of the top, so the profile stays flat.
The listing ties all three to high-impact activity, which is running rather than walking. A magnet clip keeps the hose from swinging.
Its own Force reservoir names the film.
Heavyweight TPU, welded seams, a Plug-N-Play connector and a top-rack dishwasher claim all appear on the Force listing in this group.
On this page the film is unnamed, the seams are not described, no connector is mentioned and there is no dishwasher claim.
The American Amazon store was listing it at about $40 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. The smaller of the two HydraPak reservoirs in this group; the Force beside it is 3 L |
|---|---|
| Opening type | A Slide-Seal top — a full-width slide closure, stated as updated, carrying a universal pack hanger designed to work with clips, hooks and loops from a variety of pack brands. It is the opening type this shelf's introduction prefers, because it can be turned back |
| Fill port width | Not published as a figure. The Slide-Seal is a full-width opening rather than a port, so the width is the width of the reservoir |
| Hose internal diameter | Not published |
| Bite valve | The Comet bite valve — named, lightweight, self-sealing after each sip, with a tube magnet clip supplied to hold the hose on a strap |
| Shut-off | A thumb-activated shut-off on the bite valve — stated, so flow is cut at the mouthpiece with one thumb |
| Quick-disconnect fitting | Not published on this listing. The maker’s Force reservoir in this group states a Plug-N-Play connector; this page describes a side exit port and a tube magnet clip, and no detachable fitting |
| Film material | Not named on this listing — no TPU, polyurethane or thickness appears, where the maker names heavyweight TPU on the Force in this group |
| Seam construction | Not published as a method. Fixed Shape-Loc baffles and a 3D bottom are stated, which are structural features of the film rather than seam construction |
| Stated cleaning method | The reservoir is stated to reverse for cleaning, with an internal drying tab to make reversing easy. That is the only drying tab in this group, and it answers this shelf's buying tip directly: the reservoir turns open and will dry |
| Empty weight | Not published. The listing calls the reservoir lightweight and low profile and gives no figure |
| Amazon reference | B0BRBRBXV9 |
| EAN | 0834456003175 |
It is the small internal loop that lets you pull the reservoir inside out without fighting the film, and it is the one feature in this group that answers this shelf's buying tip head-on. The sequence is: open the Slide-Seal across the full width, reverse the bag using the tab, and hang it flat — no brush set, no drying frame, no guessing whether the inside is dry. This shelf's introduction is firm that a bladder which never dries properly is a bladder that gets thrown away, and this is the only listing in this group that publishes a mechanism rather than a wide hole.
This is the listing on this shelf most concerned with that. Three features address it together: fixed Shape-Loc baffles that stop water sloshing from end to end, a 3D bottom that gives the reservoir a shape when full, and a side exit port so the hose leaves from the edge rather than the top, which keeps the profile flat. The listing states the combination increases stabilization during high-impact activities, which is the case for running rather than walking. A tube magnet clip holds the hose on a strap so it does not swing.
The listing makes the strongest compatibility claim in this group: a universal pack hanger on the Slide-Seal top, stated to work with clips, hooks and loops from a variety of name-brand hydration packs. That matters because this shelf's introduction ends on exactly this dull detail — whether the hanger matches the sleeve in the pack you own — and a reservoir that will not hang sits at the bottom of the sleeve and sags. What is not published is a width or a height, so if your pack sleeve is tight, the dimension is still unverified.
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 |
|---|---|---|---|---|---|
| HydraPak Contour 2L | $40 | 2 L — stated. The smaller of the two HydraPak reservoirs in this group; the Force beside it is 3 L | A Slide-Seal top — a full-width slide closure, stated as updated, carrying a universal pack hanger designed to work with clips, hooks and loops from a variety of pack brands. It is the opening type this shelf's introduction prefers, because it can be turned back | Not published as a figure. The Slide-Seal is a full-width opening rather than a port, so the width is the width of the reservoir | Not published |
| CamelBak Crux 3L | $40 | 3 L — stated, and given also as 100 oz. The larger of the two Crux reservoirs in this group, where the other is 2 L and ten dollars less | A leak-proof cap, stated to be easier to open and close and tightened so it will not leak in a bag. The type is not named beyond cap, and no reversibility is claimed | Not published. The reservoir is stated to be easier to load and refill, with no figure | Not published. Fifteen of the seventeen listings on this shelf publish no bore, and this is one of them — on a listing whose main claim is about flow |
| deuter Streamer II 3.0 L reservoir | $45 | 3.0 liters — stated | A slide-clip closure — stated, and stated to be both easy to fill and leak-proof | Not published on the listing — the reservoir is given as 330 mm (13 in) × 170 mm (6.69 in) × 50 mm (1.97 in), which bounds the closure without measuring it | Not published on the listing — no hose length is published either |
| HydraPak Force 3L | $46 | 3 L — stated. The larger of the two HydraPak reservoirs in this group, and the most expensive listing on this shelf | A wide Slide-Seal top — stated to make filling easy, with the reservoir fully reversible. It is the opening type this shelf's introduction prefers, because it can be turned back on itself and dried | Not published as a figure. The Slide-Seal is a full-width opening rather than a port | Not published. The tube is described as flexible and non-kinking, insulated by a HydraFusion sleeve with a dust cover, and no bore is given |
Running or anything high-impact, where the reservoir must not slosh and must actually dry between uses
Amazon reports what buyers took in the month before this page was last checked: at least 500.
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
