The Gregory Zulu 30 is a ventilation specialist, and that is the single reason to buy it over a more general 30L daypack. It is built around Gregory's FreeFloat suspension: a tensioned trampoline-mesh back panel stretched over a perimeter wire frame, which holds the body of the pack off your spine and lets air move across the whole of your back. On a hot day, or a long steep climb where you generate heat faster than a foam back can shed it, that suspended-mesh design keeps your back drier for longer than almost anything else in the class.
It is a pack aimed at a specific hiker: someone who runs warm, carries a full day load, and wants comfort and airflow ahead of low weight. Reviewers and owners land on the same verdict again and again. The back ventilation is superb, the cushioned FreeFloat hip belt carries a heavy load comfortably, and the organisation is thorough. The catch is weight. At over 1.3kg the Zulu 30 is one of the heaviest packs in its size class, and it does not compress down small when you pack light. For the hot-day, heavy-load hiker it is aimed at, that is a trade worth making. For a fast-and-light day it is the wrong tool. Here is the full picture.
Who the Zulu 30 is for
The Zulu 30 suits the hiker who prioritises back ventilation and load comfort over weight. If you overheat easily, if your regular walking is warm-weather and sweaty, or if you simply hate arriving at a viewpoint with a soaked back, the FreeFloat suspended mesh is the reason to look here first. It moves more air across your back than a contoured foam panel can, and that is the whole point of the pack.
It also suits a heavier day load. The 30 litres and the cushioned, load-bearing hip belt mean this pack is happiest when it is reasonably full: a long summer day on the South Downs or the Jurassic Coast with full wet-weather kit, a warm layer, a proper lunch, camera gear, and three litres of water. Gregory rates it to carry serious weight, and the suspension is built to transfer that load to your hips rather than dumping it on your shoulders.
Who should look elsewhere? The fast-and-light hiker. If you move quickly, cover big distances at pace, and carry a disciplined, minimal kit list, the Zulu 30 is more pack than you need and it will feel heavy and over-built before you have put anything in it. A trail-runner-style day pack or a lighter panel-loader is the better fit for that style. This is a pack for volume and comfort, not for speed.
FreeFloat: the ventilation story
FreeFloat is Gregory's suspended-mesh suspension, and it is the feature that defines the Zulu 30. A panel of tensioned mesh is stretched over a lightweight perimeter wire frame, curving away from your back so the body of the pack sits well clear of your spine. Air moves through the gap and across the whole mesh panel, which is why this style of back is often called a trampoline back. The result is the best-ventilated carry in the 30L class.
This is the same principle behind Osprey's AirSpeed system on the Stratos 36, and it works for the same reason: nothing broad and warm is pressed against your back. On a hot climb the difference against a foam contact panel is real and immediate. Testers repeatedly single out the airflow as the Zulu's standout quality, with comfort and breathability scores at the top of the daypack field.
The trade-off with any trampoline back is the same one it always is. Suspending the load away from your body slightly reduces how tightly the weight tracks with you, and the frame and mesh add structure and weight that a simple foam panel does not. For steady hillwalking and long trail days that reduction in load-hug is a fair price for the airflow. For scrambling or anything where you want the pack pinned tight to your back, a closer-contact system is more stable. On the ground the Zulu is aimed at, warm days with a full pack, the ventilation wins that argument comfortably.
Comfort under a full day load
Where the Zulu 30 earns its keep beyond airflow is under weight. This is a pack built to carry a heavy day load in comfort, and reviewers rate its carry among the best in the class even loaded up towards its ceiling of around 13 to 14kg.
Two things do that work. The FreeFloat hip belt is cushioned and pivots with your stride, flexing to follow your hips rather than staying rigid and rubbing as a stiff belt would on a long day. It wraps the load onto your hips, which is where the weight of a full pack should sit. The shoulder harness is thickly padded and, combined with the wire-framed suspension, transfers load smoothly rather than concentrating it on your shoulders.
The upshot is a pack that stays comfortable deep into a long day when it is properly loaded. That is a different design goal from a light day pack that feels great empty and vague when full. The Zulu is the other way round: it comes into its own with weight in it. If your typical day pack is half full, you are not using what this pack is for.
30 litres: what fits and who the volume suits
Thirty litres is at the upper end of a day pack and into day-pack-plus territory. That volume is a real advantage for a certain kind of day and unnecessary bulk for another, so it is worth being honest about which you are.
The volume suits the hiker who carries more, not less. A full UK day of changeable weather looks like a waterproof jacket and trousers, a warm mid-layer, hat and gloves, a proper lunch and snacks, a first aid kit, head torch, navigation, a power bank, and up to three litres of water in a bladder. The Zulu 30 swallows all of that with room to spare and closes cleanly, without the game of Tetris you play to shut a 20L pack on a big day. It also handles bulkier loads well: a DSLR and a lens, extra layers for a group, or a light kit for a summer wild camp at a push.
If your days are shorter and your kit list is tight, the volume works against you. A 30L pack carried half-empty is more fabric, more structure and more weight than the day needs, and the Zulu does not cinch down small to hide the excess. For most standard full-day UK hikes a 22 to 26L pack is the more sensible size, which is exactly why the Osprey Talon 22 sits at the top of our daypack guide. Buy the Zulu 30 because you want the extra capacity, not in spite of it.
Fit and adjustability
The Zulu 30 comes in two frame sizes, Small/Medium and Medium/Large, and on top of that the back panel has an adjustable torso system with roughly a 3.5 inch range. That lets you slide the harness up or down to match your torso length rather than being locked to a fixed back length. For a hiker who is between standard sizes, or who has a longer or shorter back than average, that adjustment is the difference between a pack that sits right and one that never quite settles.
Getting the torso length dialled in matters more on a ventilated pack than most people expect. Because the suspended-mesh back curves away from your spine, the load sits a little further back, so a well-set torso length and a properly loaded hip belt are what keep the weight tracking with you rather than pulling backwards. Set it once to your measurement and the FreeFloat system does its job. Set it wrong and you lose some of the comfort the pack is built to deliver.
Pockets and organisation
Organisation is thorough, and it is one of the reasons the Zulu 30 reads as a serious hillwalking pack rather than a simple sack. There are around seven pockets in total across the pack.
The hip belt pockets are zippered and sit on both wings, sized for a phone, snacks, lip balm and a compact head torch, all reachable without stopping or taking the pack off. The stretch-mesh front pocket takes the grab-and-stash items you handle all day: a jacket coming on and off, gloves, a hat. Side compression pockets hold a water bottle or a folded pole and cinch the load in when the pack is not full. On top, a zippered lid or brain pocket with an internal pocket keeps the small essentials you want fast, and there is an internal hydration sleeve with a clip that takes a reservoir up to three litres, though the bladder is not included.
Two organisation niggles come up in reviews and are worth knowing. The top zippered pockets can flop awkwardly over the mouth of the main compartment when you are digging into the pack, and the Zulu is light on external lash points and daisy chains compared with some rivals, so strapping bulky or awkward kit to the outside is less flexible than on a more expedition-minded pack. Neither is a serious fault for day use, but if you routinely lash a lot to the outside it is a point to weigh.
Weight: the main trade-off
Weight is the Zulu 30's clear weakness and the first thing to understand before you buy. At over 1.3kg it is one of the heaviest packs in the 30L day pack class, and it does not compress down small when you carry a light load. The frame, the wire perimeter and the substantial suspension that make the carry so comfortable are the same things that make the empty pack heavy.
That weight is the direct cost of what the pack does well. You are paying in grams for the ventilated trampoline back and the load-hauling hip belt, and for the hiker who wants those things under a full pack it is a fair exchange. The comfort of the loaded carry offsets the weight of the empty pack.
But it flips the maths for the light-and-fast walker. If you carry little, a pack this heavy and this bulky is dead weight you feel all day and never get the benefit of, because you never load it enough to need the suspension. That is the single most important self-test before buying: if your days tend towards heavy and warm, the weight is worth it. If they tend towards light and quick, it is not, and a lighter pack is the smarter buy.
Durability
The Zulu 30 is built from a burly ripstop polyester main fabric over a steel-alloy wire frame, and the body of the pack has a robust, hard-wearing feel that reviewers rate well. The fabric and the frame are not where the durability question sits.
The question is the suspended mesh. Any trampoline-back pack carries a slightly higher risk of the tensioned mesh snagging or tearing over years of use than a plain foam panel does, simply because the mesh is exposed and under tension. This is a characteristic of the design rather than a flaw specific to Gregory, and it applies equally to Osprey's AirSpeed packs. In practice it means a bit more care about what you drag the back panel across, not a pack that will fall apart. The body fabric and frame should log years of hard day use, and Gregory backs its packs with a strong warranty.
Zulu 30 vs Osprey Stratos and Talon
For most UK buyers the real decision is Gregory against Osprey, so it is worth being clear about how they line up.
Against the Osprey Stratos 36, the two are the closest match. Both use a suspended trampoline mesh back for maximum airflow, both have adjustable torso systems, and both are aimed at hot days and bigger loads. The Stratos runs slightly larger at 36 litres and adds a detachable lid that converts to a summit pack, which the Zulu does not have. The Zulu, at 30 litres, is the tighter day-pack-plus of the two and many find its cushioned FreeFloat hip belt a touch more comfortable under load. If you want the ventilated carry plus overnight flex and a summit pack, the Stratos edges it. If you want a pure ventilated day pack and do not need the detachable lid, the Zulu is the more focused tool.
Against the Osprey Talon 22 or 33, it is a different comparison, because the Talon uses a lighter contoured-foam AirScape back rather than a trampoline. The Talon is noticeably lighter, hugs your back more closely and carries a moderate load beautifully, and it is our overall pick for standard full-day UK hikes. What it cannot match is the Zulu's outright airflow. If ventilation is your top priority and you carry a full pack, the Zulu wins. If you want the best all-round day pack at a lower weight for typical loads, the Talon is the smarter buy. That is precisely why the Talon leads our best hiking daypacks guide and the Zulu sits in it as the ventilation specialist.
The women's Jade 28
Gregory builds a women's-specific equivalent to the Zulu, the Jade, in a slightly smaller 28 litre volume. It uses the same FreeFloat suspended-mesh back and cushioned pivoting hip belt as the Zulu, so everything said here about ventilation, load comfort and organisation carries straight across. The differences are fit: a women's-specific harness shape, shoulder-strap curve and hip belt, along with the 28 litre capacity and its own size range.
If you were choosing between the two on fit rather than volume, the Jade 28 is the version to try for a narrower or shorter torso and a women's shoulder and hip shape, and the Zulu 30 for a longer or broader frame. The two litres of volume between them is a minor difference next to getting the harness shape right.
Specs at a glance
- Capacity
- 30L (men's Zulu) / 28L (women's Jade)
- Weight
- ~1.3 to 1.4kg depending on size
- Back system
- FreeFloat suspended trampoline mesh over a perimeter wire frame
- Frame
- Steel-alloy perimeter wire
- Hip belt
- FreeFloat cushioned, pivoting, with zippered pockets
- Torso adjustment
- Adjustable, ~3.5 inch range
- Sizes
- Small/Medium and Medium/Large
- Pockets
- ~7: hip belt zip pockets, stretch-mesh front, two side compression, zippered lid, internal pocket
- Hydration
- Internal reservoir sleeve up to 3L (bladder not included)
- Main fabric
- Burly ripstop polyester (recycled content)
- Load range
- Up to ~13 to 14kg
- UK price
- ~£130 to £150
Pros and cons
- FreeFloat suspended-mesh back is the best ventilation in the 30L class
- Cushioned, pivoting hip belt carries a heavy day load in real comfort
- Adjustable torso length plus two frame sizes for a precise fit
- Thorough organisation with around seven pockets including hip belt pockets
- 30 litres of usable volume for full-kit UK days and bulkier loads
- Robust ripstop body fabric and a strong warranty
- Women's-specific Jade 28 with the same suspension
- Heavy for a day pack at over 1.3kg, among the heaviest in its class
- Does not compress down small when you pack light
- Overkill for fast-and-light or minimal-kit days
- Trampoline mesh carries a slightly higher long-term snag or tear risk than foam
- Top zip pockets can flop over the main-compartment opening
- Few external lash points for strapping bulky kit outside
The warm-weather, heavy-load day hiker who wants maximum back ventilation and comfortable load carry on full-kit UK days, and is happy to trade low weight to get it.
Verdict: is the Zulu 30 worth it?
Yes, for the hiker it is built for. The Gregory Zulu 30 does one thing better than almost any other 30L day pack: it keeps your back cool and dry under a full load, and the FreeFloat suspended-mesh back is the reason. Pair that with a cushioned, load-hauling hip belt, a properly adjustable fit and thorough organisation, and you have a pack that is a pleasure to carry on hot days with real weight in it. For the warm-weather hiker who packs full, it earns its around £150 price.
The caveats are clear and they all trace back to one thing. This is a heavy, bulky pack that does not shrink when you pack light, and it is over-built for a minimal, fast day. None of that is a fault. It is the pack being true to what it is: a ventilation-and-comfort specialist for full loads, not a lightweight all-rounder.
If you want the same ventilated carry with more volume, a summit pack and overnight flex, the Osprey Stratos 36 is the alternative. If you want the best all-round day pack at a lower weight for typical loads, the Osprey Talon is the smarter buy. But if you overheat, you carry a full pack, and you want the coolest, most comfortable loaded carry in the class, the Zulu 30 is the one to get.
Rating: 4.3 / 5
Buy the Gregory Zulu 30 on AmazonFAQ
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Brand guide: Gregory is one of the strongest names in load-carrying suspension, and the Zulu range is its ventilated day pack line.
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