A standard kid’s backpack should be large enough to carry school supplies, lunch, some snacks, extra clothes, and that one essential toy. Typically, a bag in the range of 10 - 20 litres (L) is more than enough. Some kids bags are even as small as 5L - 8L. Remember, more space isn’t always better; larger backpacks may be uncomfortable for the child to wear while adding unnecessary weight. For convenience, make sure the backpack includes several internal and external storage pockets. This will go a long way in keeping things organized!