HydraPak
Hydrapak Seeker+ 6L Gravity Filter Kit
- Protection: 8/10 What it removes from water, and how well that is proved.
- Flow rate: 4/10 How fast clean water comes through when it is new. Real flow drops as it clogs: see Ease of use.
- Weight: 2/10 How much it adds to your pack.
- Ease of use: 8/10 Filling, squeezing or pumping effort, how fast it clogs in peaty or silty water, and how easy it is to clean.
Lowest price we found
£134.99 at Ultralight Outdoor Gear
Go to Ultralight Outdoor Gear Compare 2 shopsGroup camps and basecamps where several people need water at once
- Type
- Gravity
- Removes viruses
- No
- Flow
- 1 L/min
- Weight
- 524 g
- Pore size
- 0.2 µm
- Rated life
- 1500 L
Where to buy
Ultralight Outdoor Gear £134.99 In stock. Free delivery. Shown with an RRP of £145.99. Free tracked UK delivery.
View at shop: Ultralight Outdoor GearHydraPak £146 In stock. Free delivery. HydraPak's UK shop. Free UK delivery over £75.
View at shop: HydraPakPrices checked 8 Nov 2026 on each shop's own page; shops can change them. We earn no commission on these links; shops are listed by price. More
Our ratings (out of 10)
1 to 10, compared with the whole market. Each says what it's based on. How we score
Protection
From maker's figures 8/10What it removes from water, and how well that is proved. 8: Clearly better than most.
0.2 µm hollow-fibre filter in a 63 mm cap. HydraPak's fact sheet, linked from its UK product page, names the EPA Guide Standards and NSF P231 for bacteria and cysts: a named standard for bacteria and protozoa, so 4. The product page gives different percentages and cites HSF 42, so we use the fact sheet. No virus claim.
Flow rate
From maker's figures 4/10How fast clean water comes through when it is new. Real flow drops as it clogs: see Ease of use. 4: A bit below average.
HydraPak gives only a minimum, "more than 1 L/min", on its page and fact sheet. We band the figure it gives, 1 L/min, which is 0.6 to 1.19, so the real score could be higher. No independent test of this kit measured it.
Weight
From maker's figures 2/10How much it adds to your pack. 2: A weak point.
524 g for the kit (HydraPak), in the 450 g and over band. Ultralight Outdoor Gear lists 532 g without the storage bag. HydraPak's older 6L fact sheet gives 241 g for a different, single-bag kit with an inline filter, and does not apply.
Ease of use
Estimate from maker's specs: filter type 8/10Filling, squeezing or pumping effort, how fast it clogs in peaty or silty water, and how easy it is to clean. 8: Clearly better than most.
Estimate from maker's specs
In short
Good for
- Group camps and basecamps where several people need water at once
- Gravity filtering with no pumping: hang the dirty bag and let it run
- Filling from shallow or slow water through the wide-mouth dirty bag
- Dispensing into pots and bottles with the camp tap
Strengths
- Gravity-fed: no pumping or squeezing
- Two 6 L bags, one dirty and one clean, so you can filter and pour at the same time
- Wide-mouth dirty bag with built-in pre-filter on the cap
- Backflush adapter in the box
- Camp tap for controlled pouring
- Rated to 1,500 L
Weaknesses
- Does not remove viruses
- 524 g, heavy for solo trips
- HydraPak says only "more than 1 L/min"
- Avoid freezing the filter, says HydraPak
- No independent review of this kit found
- Needs a tree, rock or pole to hang from
Sources
We haven't tested this ourselves. Every score comes from these specs, tests and reviews.