Photos: Fox · supplied retailer imagery
Shelters · Bivvies · Our take
Fox EOS 3 Man Bivvy
CUM255
A cracking khaki shelter with a proper peak, flexible front and enough space to make long sessions feel far less cramped.
- Model/reference: CUM255
- Dimensions: 205cm deep x 270cm wide x 140cm high
- Weight: 7kg
- 8,000mm hydrostatic head with a 100% polyester outer fabric
Make sure it’s the right one. This review covers the Fox EOS 3 Man Bivvy, model CUM255. Retailer listings describe this version as a 1-man shelter despite the “3 Man” name, so check the exact model reference before buying.
Tackle Index Score
Tackle Index score
A roomy, well-equipped solo bivvy with strong all-round practicality, marked down mainly for its weight and confusing capacity name.
Desk-research score from specs, price and fishing fit · How we score
- Product Quality9/10
- Performance8.9/10
- Impact on Fish Catching8.6/10
- Ease of Use8.8/10
- Value for Money8.9/10
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Who it suits
Is it right for you?
Great for
- Carp and coarse anglers wanting a roomy solo shelter. The broad 270cm width gives you space for a bedchair, tackle and day-to-day kit without everything being piled on top of you.
- Long-session anglers fishing exposed swims. The peak, waterproof fabric and flexible door setup give you useful protection when the forecast decides to kick off.
Maybe skip if
- Mobile anglers who regularly leapfrog swims. Seven kilos plus the frame and accessories is a fair lump to shift compared with a stripped-back shelter.
- Anyone needing genuine two- or three-person sleeping capacity. Despite the product name, the listed capacity is 1 man. Treat it as a spacious solo bivvy, not shared accommodation.
The lowdown
Introducing the Fox EOS 3 Man Bivvy
A cracking khaki shelter with a proper peak, flexible front and enough space to make long sessions feel far less cramped.
- Model/reference: CUM255
- Dimensions: 205cm deep x 270cm wide x 140cm high
- Weight: 7kg
- 8,000mm hydrostatic head with a 100% polyester outer fabric
Quick verdict
Verdict
The Fox EOS 3 Man Bivvy is a roomy, practical shelter for anglers who want more breathing space than a compact one-man bivvy gives them. The two-rib pram-hood layout, 8,000mm hydrostatic head and generous peak all point towards proper all-weather usefulness.
It’s not the lightest or most compact option around, but the included frame support, groundsheet, pegs and flexible front make it a cracking package for longer sessions. Just don’t mistake the “3 Man” name for genuine three-angler capacity.
A roomy, well-equipped solo bivvy with strong all-round practicality, marked down mainly for its weight and confusing capacity name.
Desk-research score from specs, price and fishing fit · How we score
- Product Quality
- 9/10
- Performance
- 8.9/10
- Impact on Fish Catching
- 8.6/10
- Ease of Use
- 8.8/10
- Value for Money
- 8.9/10
Full frame support, a robust-looking pram-hood layout and useful included accessories make this feel like a properly equipped shelter.
The 8,000mm hydrostatic head, generous peak and flexible door setup give it strong all-weather potential.
A comfortable, organised base helps you stay focused on the rods, especially on longer sessions, though it won’t make the fish feed.
The supported frame, supplied groundsheet and pegs keep setup straightforward, while the seven-kilo carry weight takes the shine off mobility.
The package includes the key shelter extras and offers useful flexibility without needing a separate door and groundsheet shopping list.
Head to head
How it stacks up
Side by side with the closest kit we've reviewed. This updates as we add more reviews.
Top scorer
Top scorer
Scores are our own, out of 10. Best in each row is in green. Prices change, so check the latest before you buy.
The full rundown
Everything you'll want to know about the Fox EOS 3 Man Bivvy
The Fox EOS 3 Man Bivvy is one of those shelters that makes a lot of sense when you’re fed up with living like a folded deckchair. It gives you a broad, useful footprint, a decent peak and enough room to keep your bedchair, tackle and a few session bits without everything being wedged into the corners.
First up, let’s clear up the slightly daft naming. This is called the EOS 3 Man Bivvy, but the checked retailer capacity for model CUM255 is 1 man. So don’t turn up at the lake expecting a three-man bunkhouse, mate. Think spacious solo bivvy. That’s still a very handy thing to have on the bank.
The dimensions are 205cm deep by 270cm wide, with 140cm of height. That 270cm width is the big attraction. You can get a bedchair in, set your kit out properly and still have somewhere to put boots, bait and a brew without doing a full tactical shuffle every time the rods are off.
The two-rib pram-hood design keeps the shelter’s shape neat while giving you a generous protective peak. That peak is proper useful. It helps keep rain away from the doorway, gives you a bit of shade when the sun comes out and makes getting in and out less of a soggy faff.
The outer fabric is 100% polyester with an 8,000mm hydrostatic head. In normal bank talk, that gives you a solid level of wet-weather protection for UK sessions. Add the front options and you can set the bivvy up to suit the day rather than being stuck with one permanently sealed arrangement.
That front is where the EOS earns its keep. Roll it back and you’ve got an open-fronted shelter for warmer weather, better views of the spot or keeping an eye on the rods. When the weather turns, the two-way letterbox-style door lets you keep things more enclosed while still giving you useful access.
There’s an integrated mesh door insert too, which is dead handy in summer. It lets air move through while helping keep the creepy-crawlies outside where they belong. The PVC and solid door panel options give you more cover when the wind gets cheeky or you need a darker, more sheltered interior.
Fox supplies full frame support, so this isn’t just a floppy skin that needs constant encouragement. You also get a lightweight groundsheet and heavy-duty pegs. That makes the package more ready to go straight from the carry bag, with less hunting around for extras before you can get properly set up.
The trade-off is weight. At 7kg, it’s not outrageous for a fully supported bivvy with this footprint, but you’ll know it’s there on a long walk to a remote swim. It’s better suited to planned sessions than frantic roving, especially once you’ve added a bedchair, bags, rods and the rest of the circus.
Overall, the Fox EOS 3 Man Bivvy looks like a cracking choice if comfort matters and you want flexibility without jumping straight into a massive shelter. It’s a roomy solo base for carp and coarse fishing, with sensible features and a useful level of weather protection. Just buy it knowing what it really is: one angler’s spacious home from home, not a three-man palace.
Specifications
The nuts and bolts
- Model/reference
- CUM255
- Capacity listed by retailers
- 1 man
- Dimensions
- 205cm deep x 270cm wide x 140cm high
- Weight
- 7kg
- Fabric and waterproofing
- 100% polyester outer fabric; 8,000mm hydrostatic head
- Design and extras
- Two-rib pram hood, full frame support, roll-back front, mesh/PVC/solid door options, groundsheet, pegs and carry bag
Specs checked with Fox, Oct 2026.
Spot a model or spec change?
Our take
The roomy, flexible bivvy for proper sessions
This is best viewed as a spacious one-man shelter rather than a three-man palace. You get room for a bedchair, tackle and a bit of living space, which is exactly what makes a bivvy more comfortable when the weather turns or a session runs into another night.
The front can roll right back for an open-fronted setup, while the two-way letterbox door and interchangeable mesh, PVC and solid panels give you useful options as conditions change. That’s a lot of shelter for the money bracket, even if carrying seven kilos isn’t something you’ll forget.
Shelters · Bivvies
A broad, flexible shelter with the useful bits included
The EOS uses a two-rib pram-hood design with full frame support, so it should hold its shape nicely once pegged out. The generous peak is a real bank-friendly touch, helping protect the doorway from rain and giving you a bit of shelter when you’re sorting rigs or grabbing a brew.
Inside, the 205cm by 270cm footprint is roomy for one angler. There’s space for a bedchair and tackle without turning every movement into a game of human Tetris. The 140cm height means you can sit up and organise yourself, but it isn’t designed for standing around.
The front rolls back for open-fronted fishing, while the two-way letterbox door gives you a more enclosed option. Mesh, PVC and solid door panels cover different conditions, from muggy summer nights to proper sideways rain.
Worth knowing. The “3 Man” name is easy to misread. For model CUM255, retailer listings checked for this review describe the capacity as 1 man. Treat the extra width as comfort and storage space for one angler.
On the bank
A strong fit for longer, settled sessions
This is aimed squarely at the angler who likes to get comfortable and stay put. If you’re fishing a couple of nights, carrying plenty of kit or dealing with exposed weather, the broad footprint and peak give you useful breathing space.
It’ll also suit anglers who like changing the shelter with the season. Open the front during warm weather, use mesh when you want airflow, or close things down when the wind starts pushing rain into the swim. That flexibility is spot on for classic British conditions.
It’s less ideal for a highly mobile approach. Seven kilos before you’ve loaded it into your barrow is a fair lump, and the full frame setup is more about stability and comfort than instant leapfrog speed.
Quick answers
The bits you’ll want cleared up before buying
The checked model reference is CUM255. Its listed dimensions are 205cm deep, 270cm wide and 140cm high, with a 7kg weight. The outer is 100% polyester and rated to an 8,000mm hydrostatic head.
The package includes full frame support, a lightweight groundsheet, heavy-duty pegs and a zipped carry bag. Two front rod straps are also built in, which is a nice touch when you’re arriving or leaving with the rods already set up.
For the best pitch, get the back facing into the worst of the weather, tension the front properly and use the supplied pegs rather than treating them as an afterthought. Keep the mesh option handy for warm nights, and roll the front back when you want a clear view over the spot.
Worth knowing. The front setup is versatile, but choose your panel according to the forecast. Open-fronted is brilliant in settled weather; a closed PVC or solid panel makes much more sense when the rain is hammering sideways.
On paper
Pros & cons
What we like
- Roomy footprint for a one-angler setup
- Generous peak gives useful protection from rain and sun
- Front rolls back, with mesh, PVC and solid door options
- Full frame support, groundsheet, pegs and carry bag supplied
Worth knowing
- The 7kg weight is noticeable for short walks or mobile fishing
- “3 Man” is a confusing name when retailer capacity listings describe it as 1 man
- At 140cm high, it’s a sit-up-and-sort-your-kit shelter rather than a stand-up bivvy
Want one?
Add it to your Wanted list or join a Group Buy — shops see anonymous totals only.
Your questions answered
What anglers want to know
The stuff you’d ask your mate on the next peg. Straight answers, no waffle.
01Is the Fox EOS 3 Man Bivvy really for three people?
Is the Fox EOS 3 Man Bivvy really for three people?
No — the checked retailer capacity listing for model CUM255 is 1 man. The “3 Man” wording is part of the product name, but you should plan around a roomy solo setup.
02Can the front be opened up completely?
Can the front be opened up completely?
Yes. The front rolls back to create an open-fronted shelter. You also get two-way letterbox-style access, plus integrated mesh, PVC and solid door options.
03Does it come with a groundsheet and pegs?
Does it come with a groundsheet and pegs?
Yes. A lightweight groundsheet and heavy-duty pegs are supplied, along with the full frame support and zipped carry bag.
What anglers say
The word from the bank
Our read: verdict. The strongest reasons to choose it are roomy footprint for a one-angler setup and generous peak gives useful protection from rain and sun; the main trade-off is the 7kg weight is noticeable for short walks or mobile fishing.
Our take on the feedback
Why it appeals
Checked Sept '26 — “Roomy footprint for a one-angler setup”
Best fit
Checked Sept '26 — “Carp and coarse anglers wanting a roomy solo shelter: The broad 270cm width gives you space for a bedchair, tackle and day-to-day kit without everything being piled on top of you.”
Worth knowing
Checked Sept '26 — “The 7kg weight is noticeable for short walks or mobile fishing”
Tackle Index’s take from the product details and fishing fit we checked. We haven’t found enough independent public feedback to call this an angler consensus yet.
Angler score
What our readers rate Fox EOS 3 Man Bivvy
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Owner reports
Own this? Help the next angler.
Quick multiple-choice reports from people who say they own the Fox EOS 3 Man Bivvy. Not verified purchases, and kept separate from our score.
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