How to choose the right sized backpack. For which use?
The size of your backpack depends on several criteria. Amongst these criteria, the main reason why you will use the backpack is important. The ideal size for your backpack is not the same for daily use, long hikes or long trips.
For daily use You prefer to carry your belongings in a backpack, because it is more convenient on public transport. In this case, two sizes of backpack could be right for you. In a 10-litre backpack, you can carry a book, a Thermos flask or a bottle of water, an e-book reader, a notebook, etc. This volume can contain small objects and accessories. On the other hand, if you want to carry a laptop computer, then you should opt for a 20 to 25-litre backpack. This capacity may also be suited to carrying your picnic, your drinks and your sun cream on walks lasting a few hours.
- Long hikes or two-day treks If you are planning a one-day hike or a weekend trek, then the volume of your backpack must be at least 30 litres, but only if you have accommodation on the spot and you do not have to carry any camping equipment. If there are more than two of you and you intend to carry everyone's gear, especially for the children, then a 40-litre backpack will be more suitable.
For an expedition lasting several days or a long trip Are you planning to go camping for several days or spending your nights in a bivvy or refuge? In this case, your backpack must be large enough to contain you day and night time clothing, your duvet and the basic equipment for eating and drinking. The 50 and 60-litre models are ideally suited to this situation. These sizes are also suitable for backpackers who are planning a long trip in many stages.