The invention relates to a rucksack harness comprising central adjustment means (6) located on an upper part of a rear wall of a rucksack; and a central web (8) adjustably attached to the rear wall of the rucksack by the central adjustment means (6), the central web (8) running downwardly along the length of the rucksack to a branch point (4) at which the central web (8) is bifurcated to form to a pair of side webs (10), the pair of side webs (10) passing first through a pair of loops (12) positioned at either side of a lower part of the rear wall of the rucksack, and then passing upwardly along either side of the rucksack and under a stabilizing member (14) or spreader plate, the ends of the pair of side webs being attached to a pair of shoulder carrier straps (16), wherein the length of the shoulder carrier straps (16) in relation to the rear of the rucksack may be adjusted by pulling the end of the central web (8) through the central adjustment means (6).