Deuter Aircontact Core 50+10 vs Gregory Zulu 55
Quick take: The Deuter Aircontact Core 50+10 carries more (60 vs 55 liters); the Gregory Zulu 55 is lighter (4.18 vs 5.09 lbs).
Which one to buy
Price won't split them, since each is $280, and load ratings are close: 50 lbs on the Gregory, 22-44 lbs on the Deuter, a range owners find genuinely usable. That makes the decision about weight, airflow and fit rather than carrying ability. The Zulu 55 weighs 4.18 lbs against the Aircontact Core's 5.09, and its suspended mesh panel gives real airflow behind your back rather than grooved foam. The Core's foam-rib back sits closer to the spine and runs warmer.
Fit is where the two diverge most. The Core's VariClick spans 42-62 cm in five fixed stops, and the top of that range makes it one of the few mainstream packs that fits very tall torsos. The Zulu comes in S/M and M/L frames with 3.5 inches of adjustment each, and a hipbelt spanning 27 to 51 inches across the range, which fits more body shapes than most packs at this level. If your torso is long, measure against the Core's range; if your hips are unusually narrow or wide, the Zulu's belt range is the bigger asset. There is no women's Zulu; Gregory's Jade is the counterpart.
The Core counters with layout. A U-shaped front zip opens it like a suitcase, a wet compartment keeps a damp tent away from your sleeping bag, and the lid comes off for shorter trips. The Zulu has hipbelt pockets, which the Core lacks, and its mesh curve eats a little volume and holds the load slightly off your center of gravity. You'll buy a rain cover for either. For most three-season backpackers the Zulu is the better buy: nearly a pound lighter for the same money and rated 6 lbs higher. The Core is for very tall torsos, or anyone who wants the front-zip and wet-compartment layout on hut trips.
Deuter Aircontact Core 50+10
For very tall torsos, or if suitcase-style access and a separate wet compartment matter on your trips.
Gregory Zulu 55
Best for three-season trips up to 50 lbs where a lighter pack, real back ventilation and a hipbelt that fits a wide range of waists come first.
| Spec | Deuter Aircontact Core 50+10 | Gregory Zulu 55 |
|---|---|---|
| Price | $280 | $280 |
| Rating | — | — |
| Type | Traditional Pack | Traditional Pack |
| Frame Type | Internal Frame | Internal Frame |
| Capacity | 50+10 L | 55 L |
| Weight | 5.09 lbs | 4.18 lbs |
| Max Load | 22-44 lbs (10-20 kg) | 50 lbs |
| Torso Fit | VariClick 5-stage, 42-62 cm (16.5-24.5 in) | S/M and M/L with 3.5 in of adjustment; hipbelt 27-51 in |
| Material | 500D PA textured with 235D recycled PA plain weave | 40% recycled 400D polyester ripstop with 420D nylon |
| Back Panel | Aircontact with Air Spacer mesh and aluminium Y-frame | Ventilated suspended mesh panel |
| Adjustable torso | Yes | Yes |
| Ventilated back | Yes | Yes |
| Raincover included | No | No |
| Hipbelt pockets | No | Yes |
| Removable lid | Yes | No |
| Hydration sleeve | Yes | Yes |
| Fits BV500 bear can | No | No |
| Warranty | Deuter lifetime repair policy | Limited lifetime warranty against defects in materials and workmanship, original purchaser |
Pros & cons
Deuter Aircontact Core 50+10
- ✓The external aluminium Y-frame transfers heavy loads to the hips as well as anything in the price class, and the 10-20 kg rating is genuinely usable rather than optimistic.
- ✓VariClick gives 42-62 cm of back length in five positive stops, so the fit is repeatable rather than a friction slider that creeps under load.
- ✓A U-shaped front zipper opens the main compartment like a suitcase, which avoids the top-loader problem of unpacking everything to reach the bottom.
- ✓The separate bottom compartment and dedicated wet compartment keep a damp tent or muddy layers away from a dry sleeping bag.
- ✓VariFlex hip fins pivot with the stride instead of staying fixed to the frame, which reduces the rocking that shows up on uneven ground.
- ✓The zip-out 1.5 L bottle holster on the hip fin means water is reachable without stopping or removing the pack.
- ✓The detachable, height-adjustable lid lets the pack shrink for a shorter trip rather than carrying dead volume.
- ✓Deuter's lifetime repair policy covers wear and manufacturing faults on a pack that costs meaningfully less than an Aether 65 or Baltoro 65.
- ✗At 2,310 g (5.09 lb) it is over a pound heavier than a Gregory Focal 58 or Osprey Exos 58 of comparable volume.
- ✗The foam-rib Aircontact back sits closer to the spine than a suspended-mesh panel, so it ventilates less well than Deuter's own Futura Air Trek in hot weather.
- ✗The stated 50 L is only reached with the +10 collar extended; packed to the lid it is closer to a true 50 than the badge suggests.
- ✗No rain cover is included at this price, unlike the Aircontact Pro and the Futura Air Trek.
- ✗The external Y-frame adds bulk that makes the pack awkward as carry-on or in a crowded hut.
- ✗Deuter's US size run is narrower than Osprey's: two men's volumes against the Aether's four.
- ✗The 500D face fabric is durable but heavy, and it is the main reason the pack cannot compete on weight.
- ✗Bear-canister fit is not stated by Deuter, so it should not be assumed for trips that require one.
Gregory Zulu 55
- ✓A ventilated 55 L pack rated to 50 lb at $280, with FreeFloat hipbelt and U-Zip access.
- ✓3.5 inches of torso adjustment across two frame sizes is generous.
- ✓The hipbelt spans 27 to 51 inches across the size range, wider than most packs here.
- ✓Gregory's 50 lb rating gives real headroom for food-heavy trips.
- ✓Suspended mesh panel gives Gregory's best ventilation outside the Focal.
- ✓Hipbelt pockets included.
- ✓The women's Jade is the direct counterpart if a women's fit is wanted.
- ✓Gregory's lifetime warranty.
- ✗4.18 lb is heavier than the Paragon 60 at 3.72 lb despite holding 5 L less.
- ✗No rain cover included.
- ✗Less refined than the Paragon, which costs only $20 more.
Deuter Aircontact Core 50+10 vs Gregory Zulu 55: common questions
Can the Gregory Zulu 55 carry as much as the Aircontact Core?▾
Yes. Gregory rates the Zulu to 50 lbs, enough for a week of food with three-season gear. The Core is rated to 44 lbs, and owners say its Y-frame and pivoting hip fins make that range genuinely usable.
Which pack runs cooler on hot trails?▾
The Zulu. Its suspended mesh holds the pack off your back, which gives genuine airflow. The Core's Aircontact back uses foam ribs and Air Spacer mesh closer to the spine and ventilates less in heat.
I have a very long torso. Which one fits?▾
The Core's range runs to 62 cm (24.5 in), which makes it one of the few mainstream packs that genuinely fits very tall torsos. The Zulu's M/L frame adjusts over 3.5 inches, so check that size's range on the fitting chart before ordering.