Military Backpack

Rucksacks from 30 to 100 litres, in coated fabrics with padded harnesses and, on most models, MOLLE webbing for adding pouches. Capacity is the figure everyone looks at first, but the harness and how you load it decide whether a full pack is bearable at the end of the day.

Capacity, and how much you will regret it

30 to 45 litres is a day out, a work shift or an overnight with light kit. 50 to 70 litres is the honest working range for two or three nights with a sleeping bag, a mat and food. 75 to 100 litres is expedition volume and carries a warning worth repeating: the bigger the pack, the more of it you fill, and weight you did not need is weight you carry all day.

The quoted litre figure usually counts the main compartment plus the outer pockets, so read it as what the pack swallows overall rather than a measured volume. Outer dimensions and empty weight appear on the product page wherever the maker supplies them, and are left out rather than invented where they do not.

Getting the load off your shoulders

Most complaints about a heavy pack come down to the same thing: all the weight hanging from the shoulder straps. On any model with a hip belt, set the belt on the top of your hips, not around your waist, and tighten it before the shoulder straps. Your legs then carry most of the load and your shoulders only steady it. Pack the dense items high and against your back, and the pack stops pulling you backwards on climbs.

Where a loaded rucksack gives way

Three places, predictably: the anchor points of the hip belt, the top of the shoulder straps where they meet the body of the pack, and a zip dragged across an overfilled compartment. None of that is exotic, and most of what gets called poor quality in this category is a pack that was loaded badly or forced shut. Ease a zip rather than haul on it, and do not use compression straps to close a bag that is simply too full.

Water resistance, stated plainly

The fabrics are coated and shed rain, but seams and zips are not sealed, so these are water-resistant rather than waterproof. Line the main compartment with a dry bag in sustained rain and keep your sleeping bag and dry clothing inside it.

Related collections

For the largest capacities see bergen rucksacks, for MOLLE-focused packs see tactical backpacks, for hiking loads see backpacking rucksacks, and for the full range of shapes see military bags.

Free UK delivery and 30-day returns

Every rucksack ships free to UK addresses, fully tracked. Orders are processed within 3 to 5 business days and delivered within 10 to 20 business days, and that timeline is stated here rather than promised short and missed. Returns or exchange within 30 days of delivery, unused and in original condition, approved before being sent back, with the refund issued within 7 days of return acceptance.