Buying Guide Large Rucksacks
BACK SYSTEM
The purpose of the back system is twofold. In harmony with the harness, a frame or rigid panel gives the rucksack support and helps spread weight across your shoulders and hips. Some systems use a padded, mesh-covered back panel (usually arched and grooved) to allow air flflflow and let sweat evaporate. Others have a concave frame or panel to suspend a mesh and create a bigger space for better ventilation. However, this moves weight away from your back and can infringe on internal space.
CAPACITY
Rucksack capacity (how much room there is inside) is measured in litres, and this is usually indicated by the name of the pack (like this one, the Cholatse ND45). Some packs are expandable (indicated by an additional number i.e. 55+ 10), meaning an extended brim around the opening and a floating lid gives you the flexibility to squeeze in more.
EXTRA STORAGE
Most packs feature several pockets, pouches and fixing points to help organise kit, stow valuables and make essentials easier to access. Some larger packs also have internal dividers for separating wet kit. All the rucksacks we’re reviewing are hydration reservoir compatible, with a dedicated pouch for the ’bladder’ and slot for the hose.
FIT COMPRESSION STRAPS
At the side of a rucksack, these pull weight closer to your back and stabilise the load when it’s not full. They can also be useful for holding bottles in place and fixing walking poles to the side of the rucksack. Some packs are available in different sizes to fit different back lengths, while others are adjustable. Some packs (like this one) have harnesses configured to best fit female figures, being more accommodating for broader hips, busts and narrower shoulders.
ACCESS POINTS
With most larger rucksacks, the main access point is a lid covering the drawcord into the main sack. Sometimes the lid is ‘floating’ (not fixed at the back, but attached by adjustable straps), making it easier to stow bulky extras underneath. This combo is great for compressing the load and protecting the main pocket from the rain (see more about weatherproofing overleaf). Some packs also feature zips in the side and/or bottom for quick access to items buried deep inside.
HARNESS
When properly adjusted, the body-hugging combo of padded shoulder straps and a hip belt should comfortably spread weight from your shoulders and upper back to your hips. A sternum strap (across the chest) keeps the shoulder straps centred, while load stabilisers (over the shoulders) let you pull the weight of the pack towards your centre of gravity, helping your balance.