Flink is a type of rucksack that has been specially designed for use in connection with strenuous modes of sport like mountain biking and snowboarding. An innovative support system – whereby a ball joint makes it possible for the shoulder straps of the rucksack to move freely – prevents any hampering or restriction of the wearer’s natural sequence of movements. The solid construction of the outer layer of the rucksack also results in other advantages: in case of a fall, the rigid shell will protect the wearer’s spinal column from injury, and the reduction of the contact surface of the rucksack to a minimum number of points ensures that the back will remain well ventilated.