Description
The Bag You Pack Is a Statement About What You Expect From the Day. A 45-litre rucksack is a working assumption: that you will be out longer than planned, that the weather will change its mind, and that you would rather carry the kit than improvise without it.
The Fieldwork 45 is built in Oxford weave with a nylon lining and a waterproof, rip-resistant surface. Every compartment opens two ways and folds back to a full 180 degrees, which turns packing from a search into a layout. A side, front and bottom compression strap load system lets you cinch the pack down when it is half full and expand it when it is not, and the bottom straps will carry a sleeping bag or a tent when the trip demands it.
Internally it is organised rather than merely large: a padded computer interlayer, interior slot pockets and a separate compartment, plus an air-cushion belt carrying system that moves weight from the shoulders onto the hips. Two side cup holders each hold a 750ml bottle. A patch strip and MOLLE system runs across the front and sides for pouches, carabiners and anything else you decide belongs on the outside.
Pack for the trip you are actually taking. The Fieldwork 45 has room for the rest.
Key Features
- ✦ 45-litre capacity (36-55L class) with 180-degree two-way compartment openings
- ✦ Waterproof and rip-resistant Oxford weave with nylon lining
- ✦ MOLLE system and patch strip across front and sides
- ✦ Air-cushion belt carrying system transfers load to the hips
- ✦ Side, front and bottom compression straps; bottom rig for tent or sleeping bag
- ✦ Padded computer interlayer plus interior slot pockets and compartment
- ✦ Two side bottle holders rated for 750ml flasks; unisex cut
Technical Specifications
- Capacity: 45 litres (36-55L class)
- Main Material: Oxford weave
- Lining Material: Nylon
- Backpacks Type: Softback with air-cushion belt
- Closure: Two-way zipper
- Function: Waterproof, rip-resistant
- Exterior: Open pocket, MOLLE patch strip
- Interior: Computer interlayer, slot pocket, compartment
- Bottle Holders: 2 side holders, up to 750ml
- Pattern / Fit: Camouflage, unisex, soft handle
Application Scenarios
This is a pack for the athlete who trains away from a gym, the hiker doing long single-day routes, and the traveller who refuses to check a bag. It comfortably holds two pairs of trainers, a towel, gym clothing, a meal prep box and small training tools, and the 180-degree opening means you can see all of it at once instead of digging. When the load grows, the hip belt takes the weight; when it shrinks, the compression straps take the volume. The camouflage full-body print means it reads as field equipment rather than commuter luggage.
Frequently Asked Questions
Q: Is the backpack actually waterproof?
The Oxford weave and nylon lining shed rain and the surface is waterproof and rip-resistant, so contents stay dry through showers. It is not rated for full submersion, and the bag does not ship with a rain cover.
Q: Will a 15-inch laptop fit in the computer interlayer?
Yes. The padded interlayer is sized for a standard 15-inch laptop, with slot pockets in front of it for cables, drives and a charger.
Q: What does the MOLLE system attach to?
The front and side patch strips accept standard PALS/MOLLE pouches, carabiners and a torch mount, plus any hook-and-loop patch you want to display.
Q: Can it be carried as hand luggage?
At 45 litres it sits within the carry-on range for most international airlines, though the compression straps should be trimmed before boarding. Confirm against your specific carrier limits.
Q: How much does it weigh when empty?
It is a softback pack built on an air-cushion belt system, so empty weight stays low relative to the volume. We recommend weighing your own packed load before a long route.
Q: Is it suitable for both men and women?
The harness is unisex with adjustable shoulder straps and a load-bearing hip belt, so it fits a broad range of torso lengths.
Design Notes
Load a large rucksack from the bottom up. Heavier items - footwear, meal prep boxes, training tools - belong against your back and low in the body of The Fieldwork 45, with soft clothing packed around and above them. The 180-degree opening makes this layout visible at a glance, which is the whole reason the compartments fold fully flat rather than opening to a limited angle.
The compression system is what changes the bag's character. Fully loaded, the side and front straps are released and the pack expands to its 45-litre working volume. Half packed, they are cinched down and the load stops shifting. The bottom straps are rated to hang a sleeping bag or a tent, which extends the pack from a day bag into an overnight one without adding a second piece of luggage.
The air-cushion hip belt is the component most people underuse. Tighten it before the shoulder straps and the majority of the load transfers onto your hips, which is what makes a heavy 45 litres walkable for hours. Wipe the Oxford weave with a damp cloth after field use, and air the pack fully before storing it compressed.









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