The Rab Hyperon 65 is the biggest, most capable pack in Rab's overhauled 2025 range, and it is the one to look at when your trips run long, remote and heavy. This is a proper load-hauler: a fully adjustable V-TRAX back, a pivoting hip belt and a body built to take fifteen kilos and more of tent, sleeping bag, stove, fuel and food, then settle it on your hips so you can walk day after day without your shoulders paying the bill. It is the expedition end of the range, sitting above the streamlined Exion, and it does the one job a big trekking sack has to do well: it carries serious weight comfortably.
At around £290 RRP it is a premium pack, and it lands squarely against the Osprey Aether 65 at the same money. It has also had more UK editorial attention than any other pack in the new Rab line, and the early verdicts are strong: BASE Magazine called the V-TRAX system "the MVP here" and rated its adjustability and weight transfer as "top-tier", while Trek and Mountain praised a carry that "feels almost weightless when you actually put it on" and storage that is "absolutely rammed with options". The one honest caveat is that this is a brand-new pack with almost no long-term owner data behind it yet. Here is the full picture, built from Rab's specifications and that first wave of UK reviews.
Who the Hyperon 65 is for
The Hyperon 65 suits the walker who carries heavy and walks long, and who genuinely needs 65 litres rather than reaching for it out of habit. If your trips run to a week or more with a full camping setup, or you head into remote terrain where you have to be self-sufficient and carry everything from extra fuel to bulkier winter kit, this is built for exactly that. Rab pitches it at long-distance and remote trekking and shorter expedition use, and that is honest positioning: it is a load-hauler first and everything else second.
It also suits anyone buying a big pack online who cannot try one on, because the V-TRAX back adjusts across a wide torso range and comes in two back-length sizes plus a women's ND fit. The odds of dialling in a workable carry out of the box are high, which matters most on a pack this expensive and this dependent on fit.
Who should look elsewhere? Most UK backpackers, honestly. For the three-to-five-day trips that make up the bulk of British hill walking, 65 litres is more pack than you need, and the Rab Exion 55 is the more sensible size and a little lighter and cheaper with it. Gram-counters running a light kit list should look at the ultralight Rab Muon 50 instead. The Hyperon is the pack you choose when the trip and the load are genuinely large, not the default multi-day sack.
A new pack from a new range
One point to be straight about before anything else. Rab relaunched its entire pack range from the ground up in 2025, and the Hyperon is the flagship of that new line. That means there is very little long-term, independent test data on it yet, and on Amazon UK the listings are recent and often sold by third-party sellers with thin or zero review counts. That is not a mark against the pack; it is simply where any new range sits in its first year.
What can be judged with confidence is the design, the specification and the early expert coverage, and on all three the Hyperon looks strong. It has drawn more UK editorial attention than any other pack in the new range, from Advnture, Trek and Mountain and BASE, and the reviews are consistent in their praise for the carry system and the build. Rab also has a long, strong record on materials and build quality across its jackets and sleeping bags, and the pack range carries the same Rab guarantee. If you prefer to wait for a body of owner reviews before spending £290, that is a fair reason to hold a season. If you are happy to buy on specification, brand and expert verdicts, the case here is a good one, and buying from an established retailer like Blacks rather than a marketplace third party is the safer route while UK stock beds in.
The V-TRAX adjustable back
The V-TRAX back is the heart of this pack and the feature the reviews single out above all others. It is Rab's fully adjustable heavy-load carry system, shared with the Exion, and its job is to let you set the back length precisely to your torso so the pack transfers weight onto your hips rather than sagging onto your shoulders. On the Hyperon that adjustment runs across a generous range, roughly 48 to 58cm on the Medium and 53 to 63cm on the Large, using a refined hook-and-loop panel that slides and locks.
What sets it apart from a fiddly adjustable back is how cleanly it works. BASE Magazine reported it can be "adjusted on the fly with gloves on" without hassle, and that the hip belt distributes weight with "oddly satisfying precision". A hook-and-loop system done badly slips under load or refuses to grip; done well, as it appears to be here, it gives you a fixed-feeling carry that you can still retune when your kit or your layers change. That combination of a wide adjustment range and a system that holds is exactly what a big-load pack needs, and it is the main reason the Hyperon carries as well as the early testers say it does.
Big-load carry comfort
Carry comfort is where the Hyperon earns its price, and it is where the early reviews are most emphatic. The structure behind it is a wraparound cushioned harness, thick perforated foam padding, a pronounced lumbar pad and an independent hip belt built around a curved metal stay. The hip belt pivots with your hips as you stride and twist over uneven ground, so it keeps contact and keeps carrying weight rather than fighting your movement, and a forward-pull design lets you cinch the load tight onto your hips in one motion.
The result, according to the testers who have loaded it, is a pack that hides its weight. Trek and Mountain found it "feels almost weightless when you actually put it on" despite the capacity, and BASE went as far as to say you could "probably carry your guilty conscience in this pack and not feel it". That is the headline strength here: at the fifteen-kilos-and-above loads a 65-litre pack is built for, the Hyperon settles the weight low and stable and takes it off your shoulders, which is the whole point of buying a pack this size and this heavy. A stable 16kg on a good hip belt walks lighter than an unstable 13kg dragging backwards off your shoulders, and this is a pack built firmly on the right side of that trade.
Fit and adjustment
Fit is the single most important thing to get right on a pack this big, and the Hyperon gives you the tools. It comes in two back lengths, Medium and Large, and the V-TRAX system then adjusts within each, so between the size and the sliding back you can cover a wide spread of torsos. For smaller frames Rab makes the women's Hyperon ND65, its Narrow Dimensions fit, with a shorter back, a narrower harness and a hip belt shaped for a woman's body. The hip belt across the range is extendible, which helps at both ends of the size range.
Setting it is the same drill as any adjustable pack. Measure from the bony C7 bump at the base of your neck to the top of your hip bones to find your back length, load the pack with real weight, then slide the V-TRAX harness so the hip belt sits on top of your hip bones and the shoulder straps wrap without a gap and without carrying the load. Get that right and the frame does its job. Get it wrong and no hip belt in the world will save your shoulders. The advantage of a wide, easily adjusted system like this is that you can keep tuning it on the trail as your load lightens through a trip.
Storage and access
If carry comfort is the Hyperon's first strength, organisation is its second, and Trek and Mountain summed it up neatly by saying the pack is "absolutely rammed" with storage options. This is a feature-heavy expedition pack, not a stripped-back sack, and the access reflects that.
You get three ways into the main body. It loads from the top in the traditional way, opens via a zipped front panel so you can get at kit buried in the middle without unpacking from above, and has a lower access point with an internal divider, the classic sleeping-bag compartment that keeps a sleeping bag or wet gear separated from the rest of the load. On the outside there are external and internal lid pockets, a zipped vertical front pocket, zipped side pockets, stretch mesh side pockets for water bottles, and zipped hip-belt pockets for the phone and snacks you want without stopping. Internal and external compression straps cinch the load down and lash bulky items on.
The one gap the reviewers flagged is a small one: BASE missed a dedicated quick-grab pocket for snacks on the move, beyond the hip-belt pockets. On a pack this comprehensively stocked with storage, that is a minor note rather than a real failing. A 3-litre hydration reservoir fits inside, and a rain cover is included, tucked in its own pocket, which is a genuine value point on a pack aimed at long trips in bad weather. As always, the sensible approach in sustained hill rain is a cover plus a dry liner or dry bags inside, because a cover alone will not keep everything dry.
Fabric, durability and weather
The Hyperon is built to take a beating, and the fabric choice reflects a pack meant for remote trips where a failure is a serious problem. The main body is a 210D Robic nylon with a Spectra ripstop grid and a Hydroshield Dura coating, with a 210D Robic ripstop and Tri-Shield coating on secondary panels. The Spectra grid weaves high-strength fibres into the nylon for tear resistance at a manageable weight, and the Hydroshield coatings give the shell its weather resistance. It is PFAS-free, and Rab lists a meaningful chunk of recycled content across the fabric, liner and rain cover.
The early testers rate the build highly. Trek and Mountain found the fabrics "feel really tough and durable" and concluded the pack "is not going to let you down", while BASE reported it "brushed off snow and ice like a stubborn mule" and held its shape through rough handling. There is no long-term abrasion data yet, as you would expect on a 2025 pack, but the specification and the first-hand impressions both point to a hard-wearing, weather-ready sack. Combined with Rab's guarantee and its track record on materials, durability looks like one of the Hyperon's stronger cards rather than an unknown.
Weight: the trade-off
The honest limitation of this pack is weight. Rab lists the Hyperon 65 at 2.605kg in the M-L size, which the reviewers accept as heavy but reasonable for what it is. Trek and Mountain called it "not inconsiderable, nor unreasonable" for a trekking pack of this caliber, and BASE logged the weight plainly as a con against ultralight alternatives.
Whether that matters depends on how you walk. The weight buys you the adjustable frame, the substantial pivoting hip belt, the three access points and the extensive organisation, and if you carry heavy and value a load that sits still, that pack weight is repaid many times over by the carry quality. If your priority is a low base weight and you run a truly light kit list, this is the wrong tool, and the ultralight Rab Muon 50 at around 950g or a lighter minimalist sack is the logical choice instead. The Hyperon is unapologetically built for comfort under a big load rather than for the scales, and that is the deal you sign up to.
Hyperon 65 vs Osprey Aether 65 and Deuter Aircontact Core
The Hyperon's most direct rival is the Osprey Aether 65, which lands at the same ~£290 and targets the same job: big loads, long trips, adjustable fit. Both are premium load-haulers with fully adjustable backs and pivoting, load-transferring hip belts, and both weigh around 2.5 to 2.6kg. The Aether's trump card is Osprey's Fit-on-the-Fly adjustable harness and hip belt plus a hip belt you can heat-mould to your body, backed by Osprey's All Mighty lifetime guarantee, and it has years of proven owner reviews behind it. The Hyperon's counter is a carry system the early experts rate every bit as highly, a tougher-feeling Spectra ripstop shell and, for some, the simple fact that it is not an Osprey when every second pack on the hill is. If you want the safe, proven, endlessly documented choice, the Aether is it. If you want the newer pack with the standout V-TRAX back and expedition-grade fabric, the Hyperon matches it on paper and on the early evidence.
The Deuter Aircontact Core 50+10 is the value angle rather than a like-for-like rival. At around £210 and expandable from 50 to 60 litres, it delivers most of the big-load carry comfort of these premium packs for a good deal less money, with the same body-contact, load-hugging approach and a proven track record as a Duke of Edinburgh and wild-camping workhorse. What it does not give you is the Hyperon's full 65 litres, its expedition-grade fabric or its three-way access. For the three-to-five-day trips most UK backpackers actually do, the Deuter is the smarter spend and the one I would point most people at. Step up to the Hyperon or the Aether only when your trips genuinely demand 65 litres and the extra structure that carries it.
Specs at a glance
- Capacity
- 65L (50 to 80L across the Hyperon line)
- Weight
- ~2.6kg (Rab lists 2.605kg, M-L)
- Back system
- V-TRAX fully adjustable, hook-and-loop
- Back length
- M ~48 to 58cm / L ~53 to 63cm
- Hip belt
- Pivoting, forward-pull, curved metal stay, extendible, zipped pockets
- Access
- Top-load, zipped front panel, lower access with internal divider
- Pockets
- External and internal lid, front zip, side zips, stretch mesh side, hip-belt
- Hydration
- Reservoir sleeve, up to 3L
- Rain cover
- Included
- Main fabric
- 210D Robic nylon with Spectra ripstop, Hydroshield Dura coating
- Sustainability
- PFAS-free; recycled content in fabric, liner and rain cover
- Fit options
- Standard (M and L); women's Hyperon ND65
- UK price
- ~£290 RRP
Pros and cons
- V-TRAX adjustable back rated top-tier for adjustment and weight transfer by early UK testers
- Outstanding carry comfort under heavy 15kg-plus loads; testers say it hides its weight
- Pivoting, forward-pull hip belt with a metal stay locks the load onto your hips
- Three-way access: top, zipped front panel and lower compartment with divider
- Extensive, well-thought-out organisation for expedition trips
- Tough 210D Robic and Spectra ripstop shell with Hydroshield coating, plus included rain cover
- Two back lengths plus a women's ND fit, and PFAS-free with recycled content
- Heavy at ~2.6kg; wrong pack for gram-counters
- Premium price at around £290 RRP
- Brand-new 2025 pack with little long-term owner data and thin UK listings
- No dedicated quick-grab snack pocket beyond the hip-belt pockets
- 65 litres is more pack than most UK backpackers need; the Exion 55 is the saner size
Backpackers who carry heavy week-long or expedition loads and want a fully adjustable, comfortable, hard-wearing 65-litre carry for long, remote and self-sufficient trips.
Verdict: is the Hyperon 65 worth it?
Yes, if you genuinely need a big-load pack and want one of the best-carrying options going. The Rab Hyperon 65 does the core job of an expedition sack better than most: the V-TRAX back adjusts precisely and holds, the pivoting hip belt and cushioned harness settle a heavy load low and stable, and the early UK testers are close to unanimous that it hides its weight on your back. Add a tough Spectra ripstop shell, three-way access, comprehensive organisation and an included rain cover, and you have a pack that covers long, remote, heavy trips convincingly for its ~£290 price.
The caveats are clear and they point one way. This is a heavy, premium, expedition-scale pack, not a light or everyday one, and it is brand new, so the long-term owner data that gives real peace of mind is not there yet. None of that is a fault. It is the pack being true to what it is: a load-hauler for people who carry serious weight over serious distances.
If you want the proven, endlessly documented alternative at the same money, weigh it against the Osprey Aether 65. If your trips are the more usual three-to-five-day UK affairs, the Deuter Aircontact Core is the smarter-value spend and the Rab Exion 55 the saner size. But for genuine 65-litre, big-load, long-trip carrying, the Hyperon 65 is one of the most capable and comfortable packs in its class, and a strong debut for Rab's new range.
Rating: 4.4 / 5
Buy the Rab Hyperon 65 on AmazonAs a brand-new 2025 pack, the Hyperon's Amazon UK listing is recent and often third-party sold, so a Blacks (Awin) option is the safer route while stock beds in.
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