Balanced rucksack

A rucksack has a front portion 11 and a back portion 12, joined by two shoulder straps 7l, 7r and two torso straps 9l, 9r. The front portion 11 and the back portion 12 are arranged such that when placed on a torso, the centre of gravity of the rucksack is substantially aligned with a centre of the thoracic region (21, fig.4). The invention also relates to a frame (110, fig.8) cooperating with the shoulder straps, wherein the frame (110, fig.8) increases the surface area of contact between the rucksack and the torso, and prevents the rucksack's centre of gravity from moving out of substantial alignment with the centre of the thoracic region (21, fig.4).